mirror of https://github.com/wwarthen/RomWBW.git
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Added a new driver category for DSKY (Display/Keypad) devices. Existing DSKY devices were converted into drivers ICM and PKD. These devices were previously DSKY and DSKYNG. This removes substantial code duplication and recovers significant space in romldr and dbgmon.pull/351/head v3.3.0-dev.27
Wayne Warthen
3 years ago
43 changed files with 1449 additions and 1242 deletions
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@ -1,386 +0,0 @@ |
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; |
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;================================================================================================== |
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; DSKY (DISPLAY AND KEYBOARD) ROUTINES |
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;================================================================================================== |
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; |
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; THE DSKY MAY COINCIDE ON THE SAME PPI BUS AS A PPISD. IT MAY NOT |
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; SHARE A PPI BUS WITH A PPIDE. SEE PPI_BUS.TXT FOR MORE INFORMATION. |
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; |
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; LED SEGMENTS (BIT VALUES) |
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; |
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; +--40--+ |
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; 02 20 |
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; +--04--+ |
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; 08 10 |
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; +--01--+ 80 |
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; |
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; DSKY SCAN CODES ARE ONE BYTE: CCRRRRRR |
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; BITS 7-6 IDENTFY THE COLUMN OF THE KEY PRESSED |
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; BITS 5-0 ARE A BITMAP, WITH A BIT ON TO INDICATE ROW OF KEY PRESSED |
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; |
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; ____PC0________PC1________PC2________PC3____ |
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; PB5 | $20 [D] $60 [E] $A0 [F] $E0 [BO] |
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; PB4 | $10 [A] $50 [B] $90 [C] $D0 [GO] |
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; PB3 | $08 [7] $48 [8] $88 [9] $C8 [EX] |
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; PB2 | $04 [4] $44 [5] $84 [6] $C4 [DE] |
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; PB1 | $02 [1] $42 [2] $82 [3] $C2 [EN] |
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; PB0 | $01 [FW] $41 [0] $81 [BK] $C1 [CL] |
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; |
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; |
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PPIA .EQU DSKYPPIBASE + 0 ; PORT A |
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PPIB .EQU DSKYPPIBASE + 1 ; PORT B |
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PPIC .EQU DSKYPPIBASE + 2 ; PORT C |
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PPIX .EQU DSKYPPIBASE + 3 ; PPI CONTROL PORT |
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; |
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;__DSKY_INIT_________________________________________________________________________________________ |
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; |
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; CONFIGURE PARALLEL PORT AND CLEAR KEYPAD BUFFER |
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;____________________________________________________________________________________________________ |
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; |
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DSKY_PREINIT: |
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OR $FF ; SIGNAL TO WAIT FOR KEY RELEASE |
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LD (DSKY_KEYBUF),A ; SET IT |
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; |
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; PPI PORT B IS NORMALLY SET TO INPUT, BUT HERE WE |
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; TEMPORARILY SET IT TO OUTPUT. WHILE IN OUTPUT MODE, WE |
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; WRITE A VALUE OF $FF WHICH WILL BE PERSISTED BY THE PPI |
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; CHIP BUS HOLD CIRCUIT IF THERE IS NO DSKY PRESENT. SO, |
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; WE CAN SUBSEQUENTLY TEST FOR PPIB=$FF TO SEE IF THERE IS |
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; NO DSKY AND PREVENT PROBLEMS WITH PHANTOM DSKY KEY PRESSES. |
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; IF A DSKY IS PRESENT, IT WILL SIMPLY OVERPOWER THE PPI |
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; BUS HOLD CIRCUIT. |
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LD A,$80 ; PA OUT, PB OUT, PC OUT |
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OUT (PPIX),A |
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LD A,$FF ; SET PPIB=$FF, BUS HOLD |
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OUT (PPIB),A |
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; |
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LD A,$82 ; PA OUT, PB IN, PC OUT |
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OUT (PPIX),A |
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; |
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;IN A,(PPIB) ; *DEBUG* |
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;CALL PRTHEXBYTE ; *DEBUG* |
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; |
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IN A,(PPIB) ; READ PPIB |
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XOR $FF ; INVERT RESULT |
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LD (DSKY_PRESENT),A ; SAVE AS PRESENT FLAG |
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; |
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DSKY_RESET: |
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PUSH AF |
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; |
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LD A,$70 ; PPISD AND 7218 INACTIVE |
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OUT (PPIC),A |
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; |
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POP AF |
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RET |
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; |
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#IFDEF HBIOS |
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; |
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DSKY_INIT: |
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CALL NEWLINE ; FORMATTING |
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PRTS("DSKY:$") ; FORMATTING |
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; |
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PRTS(" IO=0x$") ; FORMATTING |
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LD A,DSKYPPIBASE ; GET BASE PORT |
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CALL PRTHEXBYTE ; PRINT BASE PORT |
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PRTS(" MODE=$") ; FORMATTING |
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PRTS("V1$") ; PRINT DSKY TYPE |
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; |
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LD A,(DSKY_PRESENT) ; PRESENT? |
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OR A ; SET FLAGS |
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RET NZ ; YES, ALL DONE |
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PRTS(" NOT PRESENT$") ; NOT PRESENT |
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; |
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RET |
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; |
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#ENDIF |
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; |
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#IFDEF DSKY_KBD |
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; |
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KY_0 .EQU $00 |
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KY_1 .EQU $01 |
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KY_2 .EQU $02 |
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KY_3 .EQU $03 |
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KY_4 .EQU $04 |
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KY_5 .EQU $05 |
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KY_6 .EQU $06 |
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KY_7 .EQU $07 |
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KY_8 .EQU $08 |
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KY_9 .EQU $09 |
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KY_A .EQU $0A |
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KY_B .EQU $0B |
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KY_C .EQU $0C |
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KY_D .EQU $0D |
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KY_E .EQU $0E |
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KY_F .EQU $0F |
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KY_FW .EQU $10 ; FORWARD |
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KY_BK .EQU $11 ; BACKWARD |
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KY_CL .EQU $12 ; CLEAR |
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KY_EN .EQU $13 ; ENTER |
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KY_DE .EQU $14 ; DEPOSIT |
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KY_EX .EQU $15 ; EXAMINE |
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KY_GO .EQU $16 ; GO |
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KY_BO .EQU $17 ; BOOT |
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; |
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;__DSKY_GETKEY_____________________________________________________________________________________ |
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; |
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; WAIT FOR A DSKY KEYPRESS AND RETURN |
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;____________________________________________________________________________________________________ |
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; |
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DSKY_GETKEY: |
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LD A,(DSKY_PRESENT) ; DOES IT EXIST? |
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OR A ; SET FLAGS |
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JR Z,DSKY_GETKEY1A ; ABORT IF NOT PRESENT |
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; |
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CALL DSKY_STAT ; CHECK STATUS |
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JR Z,DSKY_GETKEY ; LOOP IF NOTHING READY |
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LD A,(DSKY_KEYBUF) |
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LD B,24 ; SIZE OF DECODE TABLE |
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LD C,0 ; INDEX |
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LD HL,DSKY_KEYMAP ; POINT TO BEGINNING OF TABLE |
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DSKY_GETKEY1: |
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CP (HL) ; MATCH? |
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JR Z,DSKY_GETKEY2 ; FOUND, DONE |
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INC HL |
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INC C ; BUMP INDEX |
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DJNZ DSKY_GETKEY1 ; LOOP UNTIL EOT |
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DSKY_GETKEY1A: |
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LD A,$FF ; NOT FOUND ERR, RETURN $FF |
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RET |
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DSKY_GETKEY2: |
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LD A,$FF ; SET KEY BUF TO $FF |
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LD (DSKY_KEYBUF),A ; DO IT |
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; RETURN THE INDEX POSITION WHERE THE SCAN CODE WAS FOUND |
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LD A,C ; RETURN INDEX VALUE |
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RET |
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; |
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;__DSKY_STAT_________________________________________________________________________________________ |
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; |
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; CHECK FOR KEY PRESS, SAVE RAW VALUE, RETURN STATUS |
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;____________________________________________________________________________________________________ |
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; |
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DSKY_STAT: |
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LD A,(DSKY_PRESENT) ; DOES IT EXIST? |
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OR A ; SET FLAGS |
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RET Z ; ABORT WITH A=0 IF NOT THERE |
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; |
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LD A,(DSKY_KEYBUF) ; GET CURRENT BUF VAL |
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CP $FF ; $FF MEANS WE ARE WAITING FOR PREV KEY TO BE RELEASED |
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JR Z,DSKY_STAT1 ; CHECK FOR PREV KEY RELEASE |
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OR A ; DO WE HAVE A SCAN CODE BUFFERED ALREADY? |
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RET NZ ; IF SO, WE ARE DONE |
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JR DSKY_STAT2 ; OTHERWISE, DO KEY CHECK |
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DSKY_STAT1: |
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; WAITING FOR PREVIOUS KEY RELEASE |
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CALL DSKY_KEY ; SCAN |
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JR Z,DSKY_STAT2 ; IF ZERO, PREV KEY RELEASED, CONTINUE |
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XOR A ; SIGNAL NO KEY PRESSED |
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RET ; AND DONE |
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DSKY_STAT2: |
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CALL DSKY_KEY ; SCAN |
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LD (DSKY_KEYBUF),A ; SAVE RESULT |
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RET ; RETURN WITH ZF SET APPROPRIATELY |
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; |
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;__DSKY_KEY_______________________________________________________________________________________ |
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; |
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; CHECK FOR KEY PRESS W/ DEBOUNCE |
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;____________________________________________________________________________________________________ |
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; |
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DSKY_KEY: |
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; IF PPIB VALUE IS $FF, THERE IS NO DSKY, SEE DSKY_INIT |
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IN A,(PPIB) |
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INC A |
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RET Z |
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CALL DSKY_SCAN ; INITIAL KEY PRESS SCAN |
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LD E,A ; SAVE INITIAL SCAN VALUE |
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DSKY_KEY1: |
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; MAX BOUNCE TIME FOR OMRON B3F IS 3MS |
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PUSH DE ; SAVE DE |
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LD DE,300 ; ~3MS DELAY |
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CALL VDELAY ; DO IT |
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CALL DSKY_SCAN ; REPEAT SCAN |
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POP DE ; RESTORE DE |
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RET Z ; IF NOTHING PRESSED, DONE |
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CP E ; SAME? |
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JR DSKY_KEY2 ; YES, READY TO RETURN |
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LD E,A ; OTHERWISE, SAVE NEW SCAN VAL |
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JR DSKY_KEY1 ; AND LOOP UNTIL STABLE VALUE |
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DSKY_KEY2: |
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OR A ; SET FLAGS BASED ON VALUE |
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RET ; AND DONE |
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; |
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;__DSKY_SCAN______________________________________________________________________________________ |
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; |
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; SCAN KEYPAD AND RETURN RAW SCAN CODE (RETURNS ZERO IF NO KEY PRESSED) |
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;____________________________________________________________________________________________________ |
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; |
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DSKY_SCAN: |
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LD B,4 ; 4 COLUMNS |
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LD C,$01 ; FIRST COLUMN |
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LD E,0 ; INITIAL COL ID |
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DSKY_SCAN1: |
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LD A,C ; COL TO A |
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OR $70 ; KEEP PPISD AND 7218 INACTIVE |
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OUT (PPIC),A ; ACTIVATE COL |
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IN A,(PPIB) ; READ ROW BITS |
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AND $3F ; MASK, WE ONLY HAVE 6 ROWS, OTHERS UNDEFINED |
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JR NZ,DSKY_SCAN2 ; IF NOT ZERO, GOT SOMETHING |
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RLC C ; NEXT COL |
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INC E ; BUMP COL ID |
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DJNZ DSKY_SCAN1 ; LOOP THROUGH ALL COLS |
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XOR A ; NOTHING FOUND, RETURN ZERO |
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JP DSKY_RESET ; RETURN VIA RESET |
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DSKY_SCAN2: |
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RRC E ; MOVE COL ID |
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RRC E ; ... TO HIGH BITS 6 & 7 |
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OR E ; COMBINE WITH ROW |
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JP DSKY_RESET ; RETURN VIA RESET |
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; |
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;_KEYMAP_TABLE_____________________________________________________________________________________________________________ |
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; |
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DSKY_KEYMAP: |
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; POS $00 $01 $02 $03 $04 $05 $06 $07 |
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; KEY [0] [1] [2] [3] [4] [5] [6] [7] |
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.DB $41, $02, $42, $82, $04, $44, $84, $08 |
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; |
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; POS $08 $09 $0A $0B $0C $0D $0E $0F |
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; KEY [8] [9] [A] [B] [C] [D] [E] [F] |
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.DB $48, $88, $10, $50, $90, $20, $60, $A0 |
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; |
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; POS $10 $11 $12 $13 $14 $15 $16 $17 |
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; KEY [FW] [BK] [CL] [EN] [DE] [EX] [GO] [BO] |
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.DB $01, $81, $C1, $C2, $C4, $C8, $D0, $E0 |
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; |
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; KBD WORKING STORAGE |
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; |
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DSKY_KEYBUF .DB 0 |
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; |
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#ENDIF ; DSKY_KBD |
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; |
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;================================================================================================== |
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; CONVERT 32 BIT BINARY TO 8 BYTE HEX SEGMENT DISPLAY |
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;================================================================================================== |
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; |
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; HL: ADR OF 32 BIT BINARY |
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; DE: ADR OF DEST LED SEGMENT DISPLAY BUFFER (8 BYTES) |
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; |
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DSKY_BIN2SEG: |
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PUSH HL |
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PUSH DE |
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LD B,4 ; 4 BYTES OF INPUT |
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EX DE,HL |
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DSKY_BIN2SEG1: |
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LD A,(DE) ; FIRST NIBBLE |
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SRL A |
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SRL A |
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SRL A |
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SRL A |
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PUSH HL |
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LD HL,DSKY_HEXMAP |
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CALL DSKY_ADDHLA |
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LD A,(HL) |
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POP HL |
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LD (HL),A |
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INC HL |
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LD A,(DE) ; SECOND NIBBLE |
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AND 0FH |
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PUSH HL |
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LD HL,DSKY_HEXMAP |
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CALL DSKY_ADDHLA |
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LD A,(HL) |
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POP HL |
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LD (HL),A |
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INC HL |
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INC DE ; NEXT BYTE |
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DJNZ DSKY_BIN2SEG1 |
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POP DE |
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POP HL |
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RET |
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; |
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;================================================================================================== |
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; DSKY SHOW BUFFER |
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; HL: ADDRESS OF BUFFER |
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;================================================================================================== |
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; |
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DSKY_SHOW: |
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;;PUSH AF ; SAVE 7218 CONTROL BITS |
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LD A,82H ; SETUP PPI |
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OUT (PPIX),A |
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CALL DSKY_COFF |
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;;POP AF |
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LD A,$F0 ; 7218 -> (DATA COMING, NO DECODE) |
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OUT (PPIA),A |
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CALL DSKY_STROBEC ; STROBE COMMAND |
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LD B,DSKY_BUFLEN ; NUMBER OF DIGITS |
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LD C,PPIA |
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DSKY_HEXOUT2: |
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;OUTI |
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LD A,(HL) |
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XOR $80 ; FIX DOT POLARITY |
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OUT (C),A |
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INC HL |
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DEC B |
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JP Z,DSKY_STROBE ; DO FINAL STROBE AND RETURN |
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CALL DSKY_STROBE ; STROBE BYTE VALUE |
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JR DSKY_HEXOUT2 |
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DSKY_STROBEC: ; COMMAND STROBE |
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LD A,80H | 30H |
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JP DSKY_STROBE0 |
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DSKY_STROBE: ; DATA STROBE |
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LD A,00H | 30H ; SET WRITE STROBE |
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DSKY_STROBE0: |
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OUT (PPIC),A ; OUT TO PORTC |
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CALL DLY2 ; DELAY |
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DSKY_COFF: |
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LD A,40H | 30H ; QUIESCE |
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OUT (PPIC),A ; OUT TO PORTC |
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; CALL DSKY_DELAY ; WAIT |
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RET |
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; |
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;================================================================================================== |
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; UTILTITY FUNCTIONS |
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;================================================================================================== |
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; |
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DSKY_ADDHLA: |
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ADD A,L |
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LD L,A |
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RET NC |
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INC H |
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RET |
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; |
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;================================================================================================== |
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; STORAGE |
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;================================================================================================== |
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; |
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; CODES FOR NUMERICS |
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; HIGH BIT ALWAYS CLEAR TO SUPPRESS DECIMAL POINT |
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; SET HIGH BIT TO SHOW DECIMAL POINT |
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; |
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DSKY_HEXMAP: |
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.DB $7B ; 0 |
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.DB $30 ; 1 |
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.DB $6D ; 2 |
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.DB $75 ; 3 |
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.DB $36 ; 4 |
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.DB $57 ; 5 |
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.DB $5F ; 6 |
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.DB $70 ; 7 |
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.DB $7F ; 8 |
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.DB $77 ; 9 |
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.DB $7E ; A |
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.DB $1F ; B |
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.DB $4B ; C |
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.DB $3D ; D |
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.DB $4F ; E |
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.DB $4E ; F |
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; |
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; SEG DISPLAY WORKING STORAGE |
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; |
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DSKY_PRESENT .DB 0 |
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; |
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DSKY_BUF .FILL 8,0 |
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DSKY_BUFLEN .EQU $ - DSKY_BUF |
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DSKY_HEXBUF .FILL 4,0 |
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DSKY_HEXBUFLEN .EQU $ - DSKY_HEXBUF |
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@ -0,0 +1,354 @@ |
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; |
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;================================================================================================== |
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; DSKY V1 ICM7218 (DISPLAY AND KEYBOARD) ROUTINES |
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;================================================================================================== |
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; |
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; THE ICM MAY COINCIDE ON THE SAME PPI BUS AS A PPISD. IT MAY NOT |
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; SHARE A PPI BUS WITH A PPIDE. SEE PPI_BUS.TXT FOR MORE INFORMATION. |
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; |
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; LED SEGMENTS (BIT VALUES) |
||||
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; |
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; +--40--+ |
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; 02 20 |
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; +--04--+ |
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; 08 10 |
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; +--01--+ 80 |
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; |
||||
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; ICM SCAN CODES ARE ONE BYTE: CCRRRRRR |
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; BITS 7-6 IDENTFY THE COLUMN OF THE KEY PRESSED |
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; BITS 5-0 ARE A BITMAP, WITH A BIT ON TO INDICATE ROW OF KEY PRESSED |
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|
; |
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; ____PC0________PC1________PC2________PC3____ |
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; PB5 | $20 [D] $60 [E] $A0 [F] $E0 [BO] |
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; PB4 | $10 [A] $50 [B] $90 [C] $D0 [GO] |
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; PB3 | $08 [7] $48 [8] $88 [9] $C8 [EX] |
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; PB2 | $04 [4] $44 [5] $84 [6] $C4 [DE] |
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; PB1 | $02 [1] $42 [2] $82 [3] $C2 [EN] |
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; PB0 | $01 [FW] $41 [0] $81 [BK] $C1 [CL] |
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; |
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; |
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ICM_PPIA .EQU ICMPPIBASE + 0 ; PORT A |
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ICM_PPIB .EQU ICMPPIBASE + 1 ; PORT B |
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ICM_PPIC .EQU ICMPPIBASE + 2 ; PORT C |
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ICM_PPIX .EQU ICMPPIBASE + 3 ; PPI CONTROL PORT |
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; |
||||
|
;__ICM_INIT__________________________________________________________________________________________ |
||||
|
; |
||||
|
; CONFIGURE PARALLEL PORT AND CLEAR KEYPAD BUFFER |
||||
|
;____________________________________________________________________________________________________ |
||||
|
; |
||||
|
ICM_PREINIT: |
||||
|
LD A,(DSKY_DISPACT) ; DSKY DISPATCHER ALREADY SET? |
||||
|
OR A ; SET FLAGS |
||||
|
RET NZ ; IF ALREADY ACTIVE, ABORT |
||||
|
; |
||||
|
OR $FF ; SIGNAL TO WAIT FOR KEY RELEASE |
||||
|
LD (ICM_KEYBUF),A ; SET IT |
||||
|
; |
||||
|
; PPI PORT B IS NORMALLY SET TO INPUT, BUT HERE WE |
||||
|
; TEMPORARILY SET IT TO OUTPUT. WHILE IN OUTPUT MODE, WE |
||||
|
; WRITE A VALUE OF $FF WHICH WILL BE PERSISTED BY THE PPI |
||||
|
; CHIP BUS HOLD CIRCUIT IF THERE IS NO ICM PRESENT. SO, |
||||
|
; WE CAN SUBSEQUENTLY TEST FOR PPIB=$FF TO SEE IF THERE IS |
||||
|
; NO ICM AND PREVENT PROBLEMS WITH PHANTOM ICM KEY PRESSES. |
||||
|
; IF A ICM IS PRESENT, IT WILL SIMPLY OVERPOWER THE PPI |
||||
|
; BUS HOLD CIRCUIT. |
||||
|
LD A,$80 ; PA OUT, PB OUT, PC OUT |
||||
|
OUT (ICM_PPIX),A |
||||
|
LD A,$FF ; SET PPIB=$FF, BUS HOLD |
||||
|
OUT (ICM_PPIB),A |
||||
|
; |
||||
|
LD A,$82 ; PA OUT, PB IN, PC OUT |
||||
|
OUT (ICM_PPIX),A |
||||
|
; |
||||
|
;IN A,(ICM_PPIB) ; *DEBUG* |
||||
|
;CALL PRTHEXBYTE ; *DEBUG* |
||||
|
; |
||||
|
IN A,(ICM_PPIB) ; READ PPIB |
||||
|
XOR $FF ; INVERT RESULT |
||||
|
; |
||||
|
CALL ICM_RESET |
||||
|
; |
||||
|
RET Z ; BAIL OUT NOW IF NOT PRESENT |
||||
|
; |
||||
|
; RECORD HARDWARE PRESENT |
||||
|
LD A,$FF |
||||
|
LD (ICM_PRESENT),A |
||||
|
; |
||||
|
; REGISTER DRIVER WITH HBIOS |
||||
|
LD BC,ICM_DISPATCH |
||||
|
CALL DSKY_SETDISP |
||||
|
; |
||||
|
RET |
||||
|
; |
||||
|
ICM_INIT: |
||||
|
CALL NEWLINE ; FORMATTING |
||||
|
PRTS("ICM:$") ; FORMATTING |
||||
|
; |
||||
|
PRTS(" IO=0x$") ; FORMATTING |
||||
|
LD A,ICMPPIBASE ; GET BASE PORT |
||||
|
CALL PRTHEXBYTE ; PRINT BASE PORT |
||||
|
; |
||||
|
LD A,(ICM_PRESENT) ; PRESENT? |
||||
|
OR A ; SET FLAGS |
||||
|
RET NZ ; YES, ALL DONE |
||||
|
PRTS(" NOT PRESENT$") ; NOT PRESENT |
||||
|
; |
||||
|
RET |
||||
|
; |
||||
|
; ICM DEVICE FUNCTION DISPATCH ENTRY |
||||
|
; A: RESULT (OUT), 0=OK, Z=OK, NZ=ERR |
||||
|
; B: FUNCTION (IN) |
||||
|
; |
||||
|
ICM_DISPATCH: |
||||
|
LD A,B ; GET REQUESTED FUNCTION |
||||
|
AND $0F ; ISOLATE SUB-FUNCTION |
||||
|
JP Z,ICM_RESET ; RESET DSKY HARDWARE |
||||
|
DEC A |
||||
|
JP Z,ICM_STAT ; GET KEYPAD STATUS |
||||
|
DEC A |
||||
|
JP Z,ICM_GETKEY ; READ A KEY FROM THE KEYPAD |
||||
|
DEC A |
||||
|
JP Z,ICM_SHOWHEX ; DISPLAY A 32-BIT BINARY VALUE IN HEX |
||||
|
DEC A |
||||
|
JP Z,ICM_SHOWSEG ; DISPLAY SEGMENTS |
||||
|
DEC A |
||||
|
JP Z,ICM_KEYLEDS ; SET KEYPAD LEDS |
||||
|
DEC A |
||||
|
JP Z,ICM_STATLED ; SET STATUS LED |
||||
|
DEC A |
||||
|
JP Z,ICM_BEEP ; BEEP DSKY SPEAKER |
||||
|
DEC A |
||||
|
JP Z,ICM_DEVICE ; DEVICE INFO |
||||
|
SYSCHKERR(ERR_NOFUNC) |
||||
|
RET |
||||
|
; |
||||
|
; |
||||
|
; |
||||
|
ICM_RESET: |
||||
|
PUSH AF |
||||
|
LD A,$70 ; PPISD AND 7218 INACTIVE |
||||
|
OUT (ICM_PPIC),A |
||||
|
POP AF |
||||
|
RET |
||||
|
; |
||||
|
; CHECK FOR KEY PRESS, SAVE RAW VALUE, RETURN STATUS |
||||
|
; |
||||
|
ICM_STAT: |
||||
|
LD A,(ICM_KEYBUF) ; GET CURRENT BUF VAL |
||||
|
CP $FF ; $FF MEANS WE ARE WAITING FOR PREV KEY TO BE RELEASED |
||||
|
JR Z,ICM_STAT1 ; CHECK FOR PREV KEY RELEASE |
||||
|
OR A ; DO WE HAVE A SCAN CODE BUFFERED ALREADY? |
||||
|
RET NZ ; IF SO, WE ARE DONE |
||||
|
JR ICM_STAT2 ; OTHERWISE, DO KEY CHECK |
||||
|
|
||||
|
ICM_STAT1: |
||||
|
; WAITING FOR PREVIOUS KEY RELEASE |
||||
|
CALL ICM_KEY ; SCAN |
||||
|
JR Z,ICM_STAT2 ; IF ZERO, PREV KEY RELEASED, CONTINUE |
||||
|
XOR A ; SIGNAL NO KEY PRESSED |
||||
|
RET ; AND DONE |
||||
|
|
||||
|
ICM_STAT2: |
||||
|
CALL ICM_KEY ; SCAN |
||||
|
LD (ICM_KEYBUF),A ; SAVE RESULT |
||||
|
RET ; RETURN WITH ZF SET APPROPRIATELY |
||||
|
; |
||||
|
; WAIT FOR A ICM KEYPRESS AND RETURN |
||||
|
; |
||||
|
ICM_GETKEY: |
||||
|
CALL ICM_STAT ; CHECK STATUS |
||||
|
JR Z,ICM_GETKEY ; LOOP IF NOTHING READY |
||||
|
LD A,(ICM_KEYBUF) |
||||
|
LD B,24 ; SIZE OF DECODE TABLE |
||||
|
LD C,0 ; INDEX |
||||
|
LD HL,ICM_KEYMAP ; POINT TO BEGINNING OF TABLE |
||||
|
ICM_GETKEY1: |
||||
|
CP (HL) ; MATCH? |
||||
|
JR Z,ICM_GETKEY2 ; FOUND, DONE |
||||
|
INC HL |
||||
|
INC C ; BUMP INDEX |
||||
|
DJNZ ICM_GETKEY1 ; LOOP UNTIL EOT |
||||
|
ICM_GETKEY1A: |
||||
|
LD A,$FF ; NOT FOUND ERR, RETURN $FF |
||||
|
RET |
||||
|
ICM_GETKEY2: |
||||
|
LD A,$FF ; SET KEY BUF TO $FF |
||||
|
LD (ICM_KEYBUF),A ; DO IT |
||||
|
; RETURN THE INDEX POSITION WHERE THE SCAN CODE WAS FOUND |
||||
|
LD E,C ; RETURN INDEX VALUE |
||||
|
XOR A ; SIGNAL SUCCESS |
||||
|
RET |
||||
|
; |
||||
|
; |
||||
|
; |
||||
|
ICM_SHOWHEX: |
||||
|
XOR A ; SIGNAL SUCCESS |
||||
|
RET |
||||
|
; |
||||
|
; ICM SHOW BUFFER |
||||
|
; HL: ADDRESS OF BUFFER |
||||
|
; |
||||
|
ICM_SHOWSEG: |
||||
|
LD A,82H ; SETUP PPI |
||||
|
OUT (ICM_PPIX),A |
||||
|
CALL ICM_COFF |
||||
|
LD A,$F0 ; 7218 -> (DATA COMING, NO DECODE) |
||||
|
OUT (ICM_PPIA),A |
||||
|
CALL ICM_STROBEC ; STROBE COMMAND |
||||
|
LD B,DSKY_BUFLEN ; NUMBER OF DIGITS |
||||
|
LD C,ICM_PPIA |
||||
|
ICM_HEXOUT2: |
||||
|
LD A,(HL) |
||||
|
CALL ICM_XLAT ; MAP SEGMENTS |
||||
|
XOR $80 ; FIX DOT POLARITY |
||||
|
OUT (C),A |
||||
|
INC HL |
||||
|
DEC B |
||||
|
JP Z,ICM_STROBE ; DO FINAL STROBE AND RETURN |
||||
|
CALL ICM_STROBE ; STROBE BYTE VALUE |
||||
|
JR ICM_HEXOUT2 |
||||
|
ICM_STROBEC: ; COMMAND STROBE |
||||
|
LD A,80H | 30H |
||||
|
JP ICM_STROBE0 |
||||
|
ICM_STROBE: ; DATA STROBE |
||||
|
LD A,00H | 30H ; SET WRITE STROBE |
||||
|
ICM_STROBE0: |
||||
|
OUT (ICM_PPIC),A ; OUT TO PORTC |
||||
|
CALL DLY2 ; DELAY |
||||
|
ICM_COFF: |
||||
|
LD A,40H | 30H ; QUIESCE |
||||
|
OUT (ICM_PPIC),A ; OUT TO PORTC |
||||
|
XOR A ; SIGNAL SUCCESS |
||||
|
RET |
||||
|
; |
||||
|
; |
||||
|
; |
||||
|
ICM_KEYLEDS: |
||||
|
ICM_STATLED: |
||||
|
ICM_BEEP: |
||||
|
XOR A ; PRETEND SUCCESS |
||||
|
RET |
||||
|
; |
||||
|
; DEVICE INFORMATION |
||||
|
; |
||||
|
ICM_DEVICE: |
||||
|
LD D,DSKYDEV_ICM ; D := DEVICE TYPE |
||||
|
LD E,0 ; E := PHYSICAL DEVICE NUMBER |
||||
|
LD H,0 ; H := MODE |
||||
|
LD L,ICMPPIBASE ; L := BASE I/O ADDRESS |
||||
|
XOR A ; SIGNAL SUCCESS |
||||
|
RET |
||||
|
; |
||||
|
;__ICM_KEY___________________________________________________________________________________________ |
||||
|
; |
||||
|
; CHECK FOR KEY PRESS W/ DEBOUNCE |
||||
|
;____________________________________________________________________________________________________ |
||||
|
; |
||||
|
ICM_KEY: |
||||
|
CALL ICM_SCAN ; INITIAL KEY PRESS SCAN |
||||
|
LD E,A ; SAVE INITIAL SCAN VALUE |
||||
|
ICM_KEY1: |
||||
|
; MAX BOUNCE TIME FOR OMRON B3F IS 3MS |
||||
|
PUSH DE ; SAVE DE |
||||
|
LD DE,300 ; ~3MS DELAY |
||||
|
CALL VDELAY ; DO IT |
||||
|
CALL ICM_SCAN ; REPEAT SCAN |
||||
|
POP DE ; RESTORE DE |
||||
|
RET Z ; IF NOTHING PRESSED, DONE |
||||
|
CP E ; SAME? |
||||
|
JR ICM_KEY2 ; YES, READY TO RETURN |
||||
|
LD E,A ; OTHERWISE, SAVE NEW SCAN VAL |
||||
|
JR ICM_KEY1 ; AND LOOP UNTIL STABLE VALUE |
||||
|
ICM_KEY2: |
||||
|
OR A ; SET FLAGS BASED ON VALUE |
||||
|
RET ; AND DONE |
||||
|
; |
||||
|
;__ICM_SCAN__________________________________________________________________________________________ |
||||
|
; |
||||
|
; SCAN KEYPAD AND RETURN RAW SCAN CODE (RETURNS ZERO IF NO KEY PRESSED) |
||||
|
;____________________________________________________________________________________________________ |
||||
|
; |
||||
|
ICM_SCAN: |
||||
|
LD B,4 ; 4 COLUMNS |
||||
|
LD C,$01 ; FIRST COLUMN |
||||
|
LD E,0 ; INITIAL COL ID |
||||
|
ICM_SCAN1: |
||||
|
LD A,C ; COL TO A |
||||
|
OR $70 ; KEEP PPISD AND 7218 INACTIVE |
||||
|
OUT (ICM_PPIC),A ; ACTIVATE COL |
||||
|
IN A,(ICM_PPIB) ; READ ROW BITS |
||||
|
AND $3F ; MASK, WE ONLY HAVE 6 ROWS, OTHERS UNDEFINED |
||||
|
JR NZ,ICM_SCAN2 ; IF NOT ZERO, GOT SOMETHING |
||||
|
RLC C ; NEXT COL |
||||
|
INC E ; BUMP COL ID |
||||
|
DJNZ ICM_SCAN1 ; LOOP THROUGH ALL COLS |
||||
|
XOR A ; NOTHING FOUND, RETURN ZERO |
||||
|
JP ICM_RESET ; RETURN VIA RESET |
||||
|
ICM_SCAN2: |
||||
|
RRC E ; MOVE COL ID |
||||
|
RRC E ; ... TO HIGH BITS 6 & 7 |
||||
|
OR E ; COMBINE WITH ROW |
||||
|
JP ICM_RESET ; RETURN VIA RESET |
||||
|
; |
||||
|
; |
||||
|
; CONVERT FORM STANDARD SEGMENT ENCODING TO ICM ENCODING |
||||
|
; |
||||
|
; From: To: |
||||
|
; +--01--+ +--40--+ |
||||
|
; 20 02 02 20 |
||||
|
; +--40--+ +--04--+ |
||||
|
; 10 04 08 10 |
||||
|
; +--08--+ 80 +--01--+ 80 |
||||
|
; |
||||
|
ICM_XLAT: |
||||
|
PUSH BC |
||||
|
PUSH HL |
||||
|
LD C,A ; ORIG VALUE TO C |
||||
|
XOR A ; INIT RESULT VALUE |
||||
|
LD B,8 |
||||
|
LD HL,ICM_XTBL |
||||
|
ICM_XLAT1: |
||||
|
RRC C ; SHIFT NEXT BIT TO CF |
||||
|
JR NC,ICM_XLAT2 ; SKIP IF BIT NOT SET |
||||
|
OR (HL) |
||||
|
ICM_XLAT2: |
||||
|
INC HL |
||||
|
DJNZ ICM_XLAT1 |
||||
|
POP HL |
||||
|
POP BC |
||||
|
RET |
||||
|
; |
||||
|
ICM_XTBL .DB $40, $20, $10, $01, $08, $02, $04, $80 |
||||
|
; |
||||
|
;_ _TABLE_____________________________________________________________________________________________________________ |
||||
|
; |
||||
|
ICM_KEYMAP: |
||||
|
; POS $00 $01 $02 $03 $04 $05 $06 $07 |
||||
|
; KEY [0] [1] [2] [3] [4] [5] [6] [7] |
||||
|
.DB $41, $02, $42, $82, $04, $44, $84, $08 |
||||
|
; |
||||
|
; POS $08 $09 $0A $0B $0C $0D $0E $0F |
||||
|
; KEY [8] [9] [A] [B] [C] [D] [E] [F] |
||||
|
.DB $48, $88, $10, $50, $90, $20, $60, $A0 |
||||
|
; |
||||
|
; POS $10 $11 $12 $13 $14 $15 $16 $17 |
||||
|
; KEY [FW] [BK] [CL] [EN] [DE] [EX] [GO] [BO] |
||||
|
.DB $01, $81, $C1, $C2, $C4, $C8, $D0, $E0 |
||||
|
; |
||||
|
; KBD WORKING STORAGE |
||||
|
; |
||||
|
ICM_KEYBUF .DB 0 |
||||
|
; |
||||
|
;================================================================================================== |
||||
|
; UTILTITY FUNCTIONS |
||||
|
;================================================================================================== |
||||
|
; |
||||
|
; |
||||
|
;================================================================================================== |
||||
|
; STORAGE |
||||
|
;================================================================================================== |
||||
|
; |
||||
|
; SEG DISPLAY WORKING STORAGE |
||||
|
; |
||||
|
ICM_PRESENT .DB 0 |
||||
File diff suppressed because it is too large
Loading…
Reference in new issue