mirror of https://github.com/wwarthen/RomWBW.git
Wayne Warthen
2 months ago
45 changed files with 420 additions and 250 deletions
Binary file not shown.
Binary file not shown.
Binary file not shown.
Binary file not shown.
Binary file not shown.
Binary file not shown.
@ -0,0 +1,275 @@ |
|||||
|
; |
||||
|
;================================================================================================== |
||||
|
; DLP-USB SERIAL DRIVER |
||||
|
;================================================================================================== |
||||
|
; |
||||
|
; THIS SERIAL DRIVER SUPPORTS THE DLP-USB DEVICE ON THE S100 SERIAL-IO |
||||
|
; BOARD. NOTE THAT THE DLP USB DEVICE IS CONNECTED IN PARALLEL TO THE |
||||
|
; S100 SYSTEM. IT DOES NOT ACTUALLY USE A TRUE SERIAL DATA STREAM |
||||
|
; EVEN THOUGH IT APPEARS AS SUCH TO THE USB-CONNECTED COMPUTER. |
||||
|
; |
||||
|
; STATUS BITS: IDLE |
||||
|
; 7: 0=CHAR PENDING 1 |
||||
|
; 6: 0=XMIT HOLDING REGISTER EMPTY 0 |
||||
|
; 5-0: UNDEFINED |
||||
|
; |
||||
|
DLPSER_NONE .EQU 0 |
||||
|
DLPSER_DLP .EQU 1 |
||||
|
; |
||||
|
DLPSERCFG .EQU SER_9600_8N1 ; DLPSER: SERIAL LINE CONFIG |
||||
|
; |
||||
|
; ACCORDING TO THE S100 SERIAL-IO BOARD CONVENTIONS, THE PPI IS |
||||
|
; CONFIGURED FOR MODE 0 WITH A=INPUT, B=OUTPUT, C0-3=OUTPUT, |
||||
|
; C4-7=INPUT |
||||
|
; |
||||
|
DLPSER_PPICTL .EQU $AB |
||||
|
DLPSER_PPICFG .EQU %10011000 |
||||
|
; |
||||
|
DLPSER_PREINIT: |
||||
|
; |
||||
|
; SETUP THE DISPATCH TABLE ENTRIES |
||||
|
; |
||||
|
LD B,DLPSERCNT ; LOOP CONTROL |
||||
|
XOR A ; ZERO TO ACCUM |
||||
|
LD (DLPSER_DEV),A ; CURRENT DEVICE NUMBER |
||||
|
LD IY,DLPSER_CFG ; POINT TO START OF CFG TABLE |
||||
|
DLPSER_PREINIT0: |
||||
|
PUSH BC ; SAVE LOOP CONTROL |
||||
|
CALL DLPSER_INITUNIT ; HAND OFF TO GENERIC INIT CODE |
||||
|
POP BC ; RESTORE LOOP CONTROL |
||||
|
; |
||||
|
OR $FF ; $FF TO ACCUME |
||||
|
LD (IY+2),A ; CLEAR HBIOS UNIT ASSIGNMENT |
||||
|
LD A,(IY+1) ; GET THE DLPSER TYPE DETECTED |
||||
|
OR A ; SET FLAGS |
||||
|
JR Z,DLPSER_PREINIT2 ; SKIP IT IF NOTHING FOUND |
||||
|
; |
||||
|
PUSH BC ; SAVE LOOP CONTROL |
||||
|
PUSH IY ; CFG ENTRY ADDRESS |
||||
|
POP DE ; ... TO DE |
||||
|
LD BC,DLPSER_FNTBL ; BC := FUNCTION TABLE ADDRESS |
||||
|
CALL NZ,CIO_ADDENT ; ADD ENTRY IF DLPSER FOUND |
||||
|
LD (IY+2),A ; RECORD OUT HBIOS UNIT NUMBER |
||||
|
POP BC ; RESTORE LOOP CONTROL |
||||
|
; |
||||
|
DLPSER_PREINIT2: |
||||
|
LD DE,DLPSER_CFGSIZ ; SIZE OF CFG ENTRY |
||||
|
ADD IY,DE ; BUMP IY TO NEXT ENTRY |
||||
|
DJNZ DLPSER_PREINIT0 ; LOOP UNTIL DONE |
||||
|
; |
||||
|
XOR A ; SIGNAL SUCCESS |
||||
|
RET ; DONE |
||||
|
; |
||||
|
; DLPSER UNIT INITIALIZATION ROUTINE |
||||
|
; |
||||
|
DLPSER_INITUNIT: |
||||
|
CALL DLPSER_DETECT ; DETECT IT |
||||
|
LD (IY+1),A ; SAVE IN CONFIG TABLE |
||||
|
OR A ; SET FLAGS |
||||
|
RET Z ; ABORT IF NOTHING THERE |
||||
|
; |
||||
|
; UPDATE WORKING DLPSER DEVICE NUM |
||||
|
LD HL,DLPSER_DEV ; POINT TO CURRENT UART DEVICE NUM |
||||
|
LD A,(HL) ; PUT IN ACCUM |
||||
|
INC (HL) ; INCREMENT IT (FOR NEXT LOOP) |
||||
|
LD (IY),A ; UPDATE UNIT NUM |
||||
|
; |
||||
|
JP DLPSER_INITDEV ; INIT DEVICE AND RETURN |
||||
|
; |
||||
|
; |
||||
|
; |
||||
|
DLPSER_INIT: |
||||
|
LD B,DLPSERCNT ; COUNT OF POSSIBLE DLPSER UNITS |
||||
|
LD IY,DLPSER_CFG ; POINT TO START OF CFG TABLE |
||||
|
DLPSER_INIT1: |
||||
|
PUSH BC ; SAVE LOOP CONTROL |
||||
|
LD A,(IY+1) ; GET DLPSER TYPE |
||||
|
OR A ; SET FLAGS |
||||
|
CALL NZ,DLPSER_PRTCFG ; PRINT IF NOT ZERO |
||||
|
POP BC ; RESTORE LOOP CONTROL |
||||
|
LD DE,DLPSER_CFGSIZ ; SIZE OF CFG ENTRY |
||||
|
ADD IY,DE ; BUMP IY TO NEXT ENTRY |
||||
|
DJNZ DLPSER_INIT1 ; LOOP TILL DONE |
||||
|
; |
||||
|
XOR A ; SIGNAL SUCCESS |
||||
|
RET ; DONE |
||||
|
; |
||||
|
; DRIVER FUNCTION TABLE |
||||
|
; |
||||
|
DLPSER_FNTBL: |
||||
|
.DW DLPSER_IN |
||||
|
.DW DLPSER_OUT |
||||
|
.DW DLPSER_IST |
||||
|
.DW DLPSER_OST |
||||
|
.DW DLPSER_INITDEV |
||||
|
.DW DLPSER_QUERY |
||||
|
.DW DLPSER_DEVICE |
||||
|
#IF (($ - DLPSER_FNTBL) != (CIO_FNCNT * 2)) |
||||
|
.ECHO "*** INVALID DLPSER FUNCTION TABLE ***\n" |
||||
|
#ENDIF |
||||
|
; |
||||
|
; |
||||
|
; |
||||
|
DLPSER_IN: |
||||
|
CALL DLPSER_IST ; CHECK FOR CHAR PENDING |
||||
|
JR Z,DLPSER_IN ; WAIT FOR IT IF NECESSARY |
||||
|
;IN A,(DLPSER_DATA) ; READ THE CHAR |
||||
|
LD C,(IY+4) ; DATA PORT |
||||
|
IN E,(C) ; GET BYTE |
||||
|
XOR A ; SIGNAL SUCCESS |
||||
|
RET ; DONE |
||||
|
; |
||||
|
; |
||||
|
; |
||||
|
DLPSER_IST: |
||||
|
;IN A,(DLPSER_STAT) ; READ LINE STATUS REGISTER |
||||
|
LD C,(IY+3) ; STATUS PORT |
||||
|
IN A,(C) ; GET STATUS |
||||
|
CPL |
||||
|
AND %10000000 ; ISOLATE DATA READY |
||||
|
JP Z,CIO_IDLE ; RETURN VIA IDLE PROCESSING |
||||
|
OR $FF ; SET A=$FF TO SIGNAL READY |
||||
|
RET ; RETURN |
||||
|
; |
||||
|
; |
||||
|
; |
||||
|
DLPSER_OUT: |
||||
|
CALL DLPSER_OST ; CHECK FOR OUTPUT READY |
||||
|
JR Z,DLPSER_OUT ; WAIT IF NECESSARY |
||||
|
;LD A,E ; RECOVER THE CHAR TO WRITE |
||||
|
;OUT (DLPSER_DATA),A ; WRITE THE CHAR |
||||
|
LD C,(IY+4) ; DATA PORT |
||||
|
OUT (C),E ; SEND BYTE |
||||
|
XOR A ; SIGNAL SUCCESS |
||||
|
RET ; DONE |
||||
|
; |
||||
|
; |
||||
|
; |
||||
|
DLPSER_OST: |
||||
|
;IN A,(DLPSER_STAT) ; READ LINE STATUS REGISTER |
||||
|
LD C,(IY+3) ; STATUS PORT |
||||
|
IN A,(C) ; GET STATUS |
||||
|
CPL |
||||
|
AND %01000000 ; ISOLATE OUTPUT RDY |
||||
|
JP Z,CIO_IDLE ; RETURN VIA IDLE PROCESSING |
||||
|
OR $FF ; SET A=$FF TO SIGNAL READY |
||||
|
RET ; RETURN |
||||
|
; |
||||
|
; |
||||
|
; |
||||
|
DLPSER_INITDEV: |
||||
|
#IF (PLATFORM == PLT_SZ80) |
||||
|
LD A,(IY+4) ; GET THE DATA PORT |
||||
|
CP $AA ; IS THIS THE SERIAL I/O BOARD DLP DEVICE? |
||||
|
JR NZ,DLPSER_INITDEV1 ; IF NOT, SKIP |
||||
|
LD A,DLPSER_PPICFG ; CONFIG 8255 PORTS |
||||
|
OUT (DLPSER_PPICTL),A ; WRITE CONTROL WORD |
||||
|
#ENDIF |
||||
|
DLPSER_INITDEV1: |
||||
|
XOR A ; NOTHING TO DO |
||||
|
RET |
||||
|
; |
||||
|
; |
||||
|
; |
||||
|
DLPSER_QUERY: |
||||
|
LD DE,DLPSERCFG |
||||
|
XOR A |
||||
|
RET |
||||
|
; |
||||
|
; |
||||
|
; |
||||
|
DLPSER_DEVICE: |
||||
|
LD D,CIODEV_DLPSER ; D := DEVICE TYPE |
||||
|
LD E,(IY) ; E := DEVICE NUM, ALWAYS 0 |
||||
|
LD C,$00 ; C := DEVICE TYPE, 0x00 IS RS-232 |
||||
|
LD H,0 ; H := 0, DRIVER HAS NO MODES |
||||
|
LD L,(IY+4) ; L := BASE I/O ADDRESS |
||||
|
XOR A ; SIGNAL SUCCESS |
||||
|
RET |
||||
|
; |
||||
|
; TEST FOR HARDWARE PRESENCE. |
||||
|
; THIS DEVICE IS VERY HARD TO DETECT. WE USE THE PRESENCE OF |
||||
|
; THE STATUS PORT. RETURN DEVICE TYPE. |
||||
|
; |
||||
|
DLPSER_DETECT: |
||||
|
LD A,(IY+3) ; STATUS PORT |
||||
|
LD C,A ; COPY TO C |
||||
|
LD ($+4),A ; MODIFY CODE |
||||
|
DLPSER_DETECT1 |
||||
|
IN A,($FF) ; READ PORT DIRECT |
||||
|
IN B,(C) ; READ PORT VIA C |
||||
|
CP B ; A==B MEANS PORT EXISTS |
||||
|
LD A,DLPSER_NONE ; ASSUME NOTHING THERE |
||||
|
RET NZ ; IF NZ, NOTHING |
||||
|
LD A,DLPSER_DLP ; ELSE TYPE IS DLP |
||||
|
RET |
||||
|
; |
||||
|
; |
||||
|
; |
||||
|
DLPSER_PRTCFG: |
||||
|
; ANNOUNCE PORT |
||||
|
CALL NEWLINE ; FORMATTING |
||||
|
PRTS("DLPSER$") ; FORMATTING |
||||
|
LD A,(IY) ; DEVICE NUM |
||||
|
CALL PRTDECB ; PRINT DEVICE NUM |
||||
|
PRTS(": IO=0x$") ; FORMATTING |
||||
|
LD A,(IY+4) ; GET DATA PORT |
||||
|
CALL PRTHEXBYTE ; PRINT DATA PORT |
||||
|
; |
||||
|
; PRINT THE DLPSER TYPE |
||||
|
CALL PC_SPACE ; FORMATTING |
||||
|
LD A,(IY+1) ; GET DLPSER TYPE BYTE |
||||
|
RLCA ; MAKE IT A WORD OFFSET |
||||
|
LD HL,DLPSER_TYPE_MAP ; POINT HL TO TYPE MAP TABLE |
||||
|
CALL ADDHLA ; HL := ENTRY |
||||
|
LD E,(HL) ; DEREFERENCE |
||||
|
INC HL ; ... |
||||
|
LD D,(HL) ; ... TO GET STRING POINTER |
||||
|
CALL WRITESTR ; PRINT IT |
||||
|
; |
||||
|
XOR A |
||||
|
RET |
||||
|
; |
||||
|
; |
||||
|
; |
||||
|
DLPSER_TYPE_MAP: |
||||
|
.DW DLPSER_STR_NONE |
||||
|
.DW DLPSER_STR_DLP |
||||
|
|
||||
|
DLPSER_STR_NONE .DB "<NOT PRESENT>$" |
||||
|
DLPSER_STR_DLP .DB "DLP-USB$" |
||||
|
; |
||||
|
; UART PORT TABLE |
||||
|
; |
||||
|
DLPSER_CFG: |
||||
|
; |
||||
|
DLPSER0_CFG: |
||||
|
.DB 0 ; DEVICE NUMBER (SET DURING INIT) ; +0 |
||||
|
.DB 0 ; DLPSER TYPE (SET DURING INIT) ; +1 |
||||
|
.DB $FF ; HBIOS CHARACTER UNIT ASSIGNED ; +2 |
||||
|
.DB DLPSER0STAT ; STATUS PORT ; +3 |
||||
|
.DB DLPSER0DATA ; DATA PORT ; +4 |
||||
|
; |
||||
|
DEVECHO "DLPSER: IO=" |
||||
|
DEVECHO DLPSER0DATA |
||||
|
DEVECHO "\n" |
||||
|
; |
||||
|
; |
||||
|
DLPSER_CFGSIZ .EQU $ - DLPSER_CFG ; SIZE OF ONE CFG TABLE ENTRY |
||||
|
; |
||||
|
#IF (DLPSERCNT >= 1) |
||||
|
DLPSER1_CFG: |
||||
|
.DB 0 ; DEVICE NUMBER (SET DURING INIT) ; +0 |
||||
|
.DB 0 ; DLPSER TYPE (SET DURING INIT) ; +1 |
||||
|
.DB $FF ; HBIOS CHARACTER UNIT ASSIGNED ; +2 |
||||
|
.DB DLPSER1STAT ; STATUS PORT ; +3 |
||||
|
.DB DLPSER1DATA ; DATA PORT ; +4 |
||||
|
; |
||||
|
DEVECHO "DLPSER: IO=" |
||||
|
DEVECHO DLPSER1DATA |
||||
|
DEVECHO "\n" |
||||
|
#ENDIF |
||||
|
; |
||||
|
; WORKING VARIABLES |
||||
|
; |
||||
|
DLPSER_DEV .DB 0 ; DEVICE NUM USED DURING INIT |
||||
@ -1,176 +0,0 @@ |
|||||
; |
|
||||
;================================================================================================== |
|
||||
; PLD-USB SERIAL DRIVER |
|
||||
;================================================================================================== |
|
||||
; |
|
||||
; THIS SERIAL DRIVER SUPPORTS THE DLP-USB DEVICE ON THE S100 SERIAL-IO |
|
||||
; BOARD. THE STATUS PORT IS ACTUALLY BITS 6-7 OF PORT C OF THE 8255. |
|
||||
; |
|
||||
; STATUS BITS: IDLE |
|
||||
; 7: 0=CHAR PENDING 1 |
|
||||
; 6: 0=XMIT HOLDING REGISTER EMPTY 0 |
|
||||
; 5-0: UNDEFINED |
|
||||
; |
|
||||
; TODO: |
|
||||
; |
|
||||
PLDSER_PPI_BASE .EQU $A8 |
|
||||
; |
|
||||
PLDSER_PPIA .EQU PLDSER_PPI_BASE + 0 |
|
||||
PLDSER_PPIB .EQU PLDSER_PPI_BASE + 1 |
|
||||
PLDSER_PPIC .EQU PLDSER_PPI_BASE + 2 |
|
||||
PLDSER_PPICTL .EQU PLDSER_PPI_BASE + 3 |
|
||||
; |
|
||||
PLDSER_STAT .EQU PLDSER_PPIC |
|
||||
PLDSER_DATA .EQU PLDSER_PPI_BASE + 4 |
|
||||
; |
|
||||
; ACCORDING TO THE S100 SERIAL-IO BOARD CONVENTIONS, THE PPI IS |
|
||||
; CONFIGURED FOR MODE 0 WITH A=INPUT, B=OUTPUT, C0-3=OUTPUT, |
|
||||
; C4-7=INPUT |
|
||||
; |
|
||||
PLDSER_PPICFG .EQU %10011000 |
|
||||
; |
|
||||
DEVECHO "PLDSER: IO=" |
|
||||
DEVECHO PLDSER_DATA |
|
||||
DEVECHO "\n" |
|
||||
; |
|
||||
; |
|
||||
; |
|
||||
PLDSER_PREINIT: |
|
||||
; |
|
||||
; TEST FOR PRESENCE |
|
||||
; |
|
||||
XOR A ; CLEAR ACCUM |
|
||||
LD (PLDSER_PRESENT),A ; PRESET TO NOT PRESENT |
|
||||
CALL PLDSER_DETECT ; CHECK FOR HARDWARE, Z=PRESENT |
|
||||
RET NZ ; ABORT IF NOT PRESENT |
|
||||
OR $FF ; PRESENT FLAG |
|
||||
LD (PLDSER_PRESENT),A ; STORE IT |
|
||||
; |
|
||||
CALL PLDSER_INITDEV |
|
||||
; |
|
||||
; ADD OURSELVES TO CIO DISPATCH TABLE |
|
||||
; |
|
||||
LD D,0 ; PHYSICAL UNIT IS ZERO |
|
||||
LD E,CIODEV_PLDSER ; DEVICE TYPE |
|
||||
LD BC,PLDSER_FNTBL ; BC := FUNCTION TABLE ADDRESS |
|
||||
CALL CIO_ADDENT ; ADD ENTRY, A := UNIT ASSIGNED |
|
||||
; |
|
||||
XOR A |
|
||||
RET |
|
||||
; |
|
||||
; |
|
||||
; |
|
||||
PLDSER_INIT: |
|
||||
LD A,(PLDSER_PRESENT) ; PRESENT FLAG |
|
||||
OR A ; SET FLAGS |
|
||||
RET Z ; ABORT IF NOT PRESENT |
|
||||
CALL NEWLINE |
|
||||
PRTS("PLDSER:$") |
|
||||
PRTS(" IO=0x$") ; FORMATTING |
|
||||
LD A,PLDSER_DATA |
|
||||
CALL PRTHEXBYTE |
|
||||
; |
|
||||
XOR A ; SIGNAL SUCCESS |
|
||||
RET |
|
||||
; |
|
||||
; DRIVER FUNCTION TABLE |
|
||||
; |
|
||||
PLDSER_FNTBL: |
|
||||
.DW PLDSER_IN |
|
||||
.DW PLDSER_OUT |
|
||||
.DW PLDSER_IST |
|
||||
.DW PLDSER_OST |
|
||||
.DW PLDSER_INITDEV |
|
||||
.DW PLDSER_QUERY |
|
||||
.DW PLDSER_DEVICE |
|
||||
#IF (($ - PLDSER_FNTBL) != (CIO_FNCNT * 2)) |
|
||||
.ECHO "*** INVALID PLDSER FUNCTION TABLE ***\n" |
|
||||
#ENDIF |
|
||||
; |
|
||||
; |
|
||||
; |
|
||||
PLDSER_IN: |
|
||||
CALL PLDSER_IST ; CHECK FOR CHAR PENDING |
|
||||
JR Z,PLDSER_IN ; WAIT FOR IT IF NECESSARY |
|
||||
IN A,(PLDSER_DATA) ; READ THE CHAR |
|
||||
LD E,A |
|
||||
RET |
|
||||
; |
|
||||
; |
|
||||
; |
|
||||
PLDSER_IST: |
|
||||
IN A,(PLDSER_STAT) ; READ LINE STATUS REGISTER |
|
||||
CPL |
|
||||
AND %10000000 ; ISOLATE DATA READY |
|
||||
JP Z,CIO_IDLE ; RETURN VIA IDLE PROCESSING |
|
||||
OR $FF ; SET A=$FF TO SIGNAL READY |
|
||||
RET ; RETURN |
|
||||
; |
|
||||
; |
|
||||
; |
|
||||
PLDSER_OUT: |
|
||||
CALL PLDSER_OST ; CHECK FOR OUTPUT READY |
|
||||
JR Z,PLDSER_OUT ; WAIT IF NECESSARY |
|
||||
LD A,E ; RECOVER THE CHAR TO WRITE |
|
||||
OUT (PLDSER_DATA),A ; WRITE THE CHAR |
|
||||
RET |
|
||||
; |
|
||||
; |
|
||||
; |
|
||||
PLDSER_OST: |
|
||||
IN A,(PLDSER_STAT) ; READ LINE STATUS REGISTER |
|
||||
CPL |
|
||||
AND %01000000 ; ISOLATE OUTPUT RDY |
|
||||
JP Z,CIO_IDLE ; RETURN VIA IDLE PROCESSING |
|
||||
OR $FF ; SET A=$FF TO SIGNAL READY |
|
||||
RET ; RETURN |
|
||||
; |
|
||||
; |
|
||||
; |
|
||||
PLDSER_INITDEV: |
|
||||
; INIT THE PPI. THE PLD ADAPTER ITSELF HAS NO |
|
||||
; CONFIGURATION CAPABILITIES. |
|
||||
LD A,PLDSER_PPICFG ; CONFIG 8255 PORTS: B=OUTPUT |
|
||||
OUT (PLDSER_PPICTL),A ; WRITE CONTROL WORD |
|
||||
RET |
|
||||
; |
|
||||
; |
|
||||
; |
|
||||
PLDSER_QUERY: |
|
||||
LD DE,PLDSERCFG |
|
||||
XOR A |
|
||||
RET |
|
||||
; |
|
||||
; |
|
||||
; |
|
||||
PLDSER_DEVICE: |
|
||||
LD D,CIODEV_PLDSER ; D := DEVICE TYPE |
|
||||
LD E,0 ; E := DEVICE NUM, ALWAYS 0 |
|
||||
LD C,$00 ; C := DEVICE TYPE, 0x00 IS RS-232 |
|
||||
LD H,0 ; H := 0, DRIVER HAS NO MODES |
|
||||
LD L,PLDSER_DATA ; L := BASE I/O ADDRESS |
|
||||
XOR A ; SIGNAL SUCCESS |
|
||||
RET |
|
||||
; |
|
||||
; TEST FOR HARDWARE PRESENCE. THE PLD ADAPTER STATUS IS EXPOSED THROUGH |
|
||||
; AN 8255 PPI. DETECTING THE PLD ITSELF IS BASICALLY IMPOSSIBLE GIVEN |
|
||||
; THERE ARE ONLY TWO STATUS BITS WITH VALUES THAT SHOULD NOT BE ASSUMED. |
|
||||
; SO, HERE WE JSUT CHECK FOR THE EXISTENCE OF THE PPI ITSELF WHICH IS |
|
||||
; USED TO INFER THE EXCISTENCE OF THE PLD ADAPTER. |
|
||||
; |
|
||||
PLDSER_DETECT: |
|
||||
; |
|
||||
; WE SETUP THE PPI TO WRITE, THEN WRITE A TEST VALUE |
|
||||
; TO PORT B, THEN READ IT BACK. IF THE PPI IS THERE |
|
||||
; THEN THE BUS HOLD CIRCUITRY WILL READ BACK THE TEST VALUE. |
|
||||
LD A,PLDSER_PPICFG ; CONFIG 8255 PORTS: B=OUTPUT |
|
||||
OUT (PLDSER_PPICTL),A ; WRITE CONTROL WORD |
|
||||
LD A,$A5 ; TEST VALUE |
|
||||
OUT (PLDSER_PPIB),A ; WRITE IT |
|
||||
IN A,(PLDSER_PPIB) ; READ IT |
|
||||
CP $A5 |
|
||||
RET |
|
||||
; |
|
||||
; |
|
||||
; |
|
||||
PLDSER_PRESENT .DB 0 ; FLAG FOR HARDWARE PRESENT |
|
||||
Loading…
Reference in new issue