mirror of https://github.com/wwarthen/RomWBW.git
wayne
13 years ago
30 changed files with 1875 additions and 39 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.
Binary file not shown.
Binary file not shown.
Binary file not shown.
@ -0,0 +1,92 @@ |
|||||
|
; |
||||
|
;================================================================================================== |
||||
|
; ROMWBW 2.X CONFIGURATION FOR N8VEM SBC W/ VDU 5/8/2012 |
||||
|
;================================================================================================== |
||||
|
; |
||||
|
; BUILD CONFIGURATION OPTIONS |
||||
|
; |
||||
|
CPUFREQ .EQU 8 ; IN MHZ, USED TO COMPUTE DELAY FACTORS |
||||
|
; |
||||
|
PLATFORM .EQU PLT_N8VEM ; PLT_N8VEM, PLT_ZETA, PLT_N8 |
||||
|
; |
||||
|
DEFCON .EQU CIODEV_UART ; DEFAULT CONSOLE DEVICE (LOADER AND MONITOR): CIODEV_UART, CIODEV_VDU, DIODEV_PRPCON |
||||
|
ALTCON .EQU DEFCON ; ALT CONSOLE DEVICE (USED WHEN CONFIG JUMPER SHORTED) |
||||
|
DEFVDA .EQU VDADEV_CVDU ; DEFAULT VDA (VDADEV_NONE, VDADEV_VDU, VDADEV_CVDU, VDADEV_UPD7220, VDADEV_N8V) |
||||
|
DEFEMU .EQU EMUTYP_TTY ; DEFAULT EMULATION TYPE (EMUTYP_TTY, EMUTYP_ANSI, ...) |
||||
|
; |
||||
|
RAMSIZE .EQU 512 ; SIZE OF RAM IN KB, MUST MATCH YOUR HARDWARE!!! |
||||
|
CLRRAMDISK .EQU CLR_AUTO ; CLR_ALWAYS, CLR_NEVER, CLR_AUTO (CLEAR IF INVALID DIR AREA) |
||||
|
; |
||||
|
DSKMAP .EQU DM_RAM ; DM_ROM, DM_RAM, DM_FD, DM_IDE, DM_PPIDE, DM_SD, DM_PRPSD, DM_PPPSD |
||||
|
; |
||||
|
DSKYENABLE .EQU FALSE ; TRUE FOR DSKY SUPPORT (DO NOT COMBINE WITH PPIDE) |
||||
|
; |
||||
|
UARTENABLE .EQU TRUE ; TRUE FOR UART SUPPORT (ALMOST ALWAYS WANT THIS TO BE TRUE) |
||||
|
UARTFIFO .EQU TRUE ; TRUE ENABLES UART FIFO (16550 ASSUMED, N8VEM AND ZETA ONLY) |
||||
|
UARTAFC .EQU FALSE ; TRUE ENABLES AUTO FLOW CONTROL (YOUR TERMINAL/UART MUST SUPPORT RTS/CTS FLOW CONTROL!!!) |
||||
|
; |
||||
|
VDUENABLE .EQU FALSE ; TRUE FOR VDU BOARD SUPPORT |
||||
|
CVDUENABLE .EQU TRUE ; TRUE FOR CVDU BOARD SUPPORT |
||||
|
UPD7220ENABLE .EQU FALSE ; TRUE FOR uPD7220 BOARD SUPPORT |
||||
|
N8VENABLE .EQU FALSE ; TRUE FOR N8 (TMS9918) VIDEO/KBD SUPPORT |
||||
|
; |
||||
|
DEFIOBYTE .EQU $00 ; DEFAULT INITIAL VALUE FOR CP/M IOBYTE, $00=TTY, $01=CRT (MUST HAVE CRT HARDWARE) |
||||
|
ALTIOBYTE .EQU DEFIOBYTE ; ALT INITIAL VALUE (USED WHEN CONFIG JUMPER SHORTED) |
||||
|
WRTCACHE .EQU TRUE ; ENABLE WRITE CACHING IN CBIOS (DE)BLOCKING ALGORITHM |
||||
|
DSKTRACE .EQU FALSE ; ENABLE TRACING OF CBIOS DISK FUNCTION CALLS |
||||
|
; |
||||
|
FDENABLE .EQU FALSE ; TRUE FOR FLOPPY SUPPORT |
||||
|
FDMODE .EQU FDMODE_DIO ; FDMODE_DIO, FDMODE_ZETA, FDMODE_DIDE, FDMODE_N8, FDMODE_DIO3 |
||||
|
FDTRACE .EQU 1 ; 0=SILENT, 1=FATAL ERRORS, 2=ALL ERRORS, 3=EVERYTHING (ONLY RELEVANT IF FDENABLE = TRUE) |
||||
|
FDMEDIA .EQU FDM144 ; FDM720, FDM144, FDM360, FDM120 (ONLY RELEVANT IF FDENABLE = TRUE) |
||||
|
FDMEDIAALT .EQU FDM720 ; ALTERNATE MEDIA TO TRY, SAME CHOICES AS ABOVE (ONLY RELEVANT IF FDMAUTO = TRUE) |
||||
|
FDMAUTO .EQU TRUE ; SELECT BETWEEN MEDIA OPTS ABOVE AUTOMATICALLY |
||||
|
; |
||||
|
IDEENABLE .EQU FALSE ; TRUE FOR IDE SUPPORT |
||||
|
IDEMODE .EQU IDEMODE_DIO ; IDEMODE_DIO, IDEMODE_DIDE |
||||
|
IDETRACE .EQU 1 ; 0=SILENT, 1=ERRORS, 2=EVERYTHING (ONLY RELEVANT IF IDEENABLE = TRUE) |
||||
|
IDE8BIT .EQU FALSE ; USE IDE 8BIT TRANSFERS (PROBABLY ONLY WORKS FOR CF CARDS!) |
||||
|
IDECAPACITY .EQU 64 ; CAPACITY OF DEVICE (IN MB) |
||||
|
; |
||||
|
PPIDEENABLE .EQU FALSE ; TRUE FOR PPIDE SUPPORT (DO NOT COMBINE WITH DSKYENABLE) |
||||
|
PPIDEMODE .EQU PPIDEMODE_STD ; PPIDEMODE_STD, PPIDEMODE_DIO3 |
||||
|
PPIDETRACE .EQU 1 ; 0=SILENT, 1=ERRORS, 2=EVERYTHING (ONLY RELEVANT IF PPIDEENABLE = TRUE) |
||||
|
PPIDE8BIT .EQU FALSE ; USE IDE 8BIT TRANSFERS (PROBABLY ONLY WORKS FOR CF CARDS!) |
||||
|
PPIDECAPACITY .EQU 64 ; CAPACITY OF DEVICE (IN MB) |
||||
|
PPIDESLOW .EQU FALSE ; ADD DELAYS TO HELP PROBLEMATIC HARDWARE (TRY THIS IF PPIDE IS UNRELIABLE) |
||||
|
; |
||||
|
SDENABLE .EQU FALSE ; TRUE FOR SD SUPPORT |
||||
|
SDTRACE .EQU 1 ; 0=SILENT, 1=ERRORS, 2=EVERYTHING (ONLY RELEVANT IF IDEENABLE = TRUE) |
||||
|
SDCAPACITY .EQU 64 ; CAPACITY OF DEVICE (IN MB) |
||||
|
SDCSIO .EQU FALSE ; TRUE IF USING THE CSIO PORT (N8 ONLY) |
||||
|
SDCSIOFAST .EQU FALSE ; TRUE IF USING THE LOOKUP TABLE RATHER THAN SHIFTS AND ROTATES (N8 ONLY) |
||||
|
PPISD .EQU FALSE ; TRUE IF USING PPISD MINI-BOARD (DO NOT COMBINE WITH PPIDE) |
||||
|
; |
||||
|
PRPENABLE .EQU FALSE ; TRUE FOR PROPIO SD SUPPORT (FOR N8VEM PROPIO ONLY!) |
||||
|
PRPSDENABLE .EQU TRUE ; TRUE FOR PROPIO SD SUPPORT (FOR N8VEM PROPIO ONLY!) |
||||
|
PRPSDTRACE .EQU 1 ; 0=SILENT, 1=ERRORS, 2=EVERYTHING (ONLY RELEVANT IF PRPSDENABLE = TRUE) |
||||
|
PRPSDCAPACITY .EQU 64 ; CAPACITY OF DEVICE (IN MB) |
||||
|
PRPCONENABLE .EQU TRUE ; TRUE FOR PROPIO CONSOLE SUPPORT (PS/2 KBD & VGA VIDEO) |
||||
|
; |
||||
|
PPPENABLE .EQU FALSE ; TRUE FOR PARPORTPROP SUPPORT |
||||
|
PPPSDENABLE .EQU TRUE ; TRUE FOR PROPIO SD SUPPORT (FOR N8VEM PROPIO ONLY!) |
||||
|
PPPSDTRACE .EQU 1 ; 0=SILENT, 1=ERRORS, 2=EVERYTHING (ONLY RELEVANT IF PPPENABLE = TRUE) |
||||
|
PPPSDCAPACITY .EQU 64 ; CAPACITY OF PPP SD DEVICE (IN MB) |
||||
|
PPPCONENABLE .EQU TRUE ; TRUE FOR PROPIO CONSOLE SUPPORT (PS/2 KBD & VGA VIDEO) |
||||
|
; |
||||
|
HDSKENABLE .EQU FALSE ; TRUE FOR SIMH HDSK SUPPORT |
||||
|
HDSKTRACE .EQU 1 ; 0=SILENT, 1=ERRORS, 2=EVERYTHING (ONLY RELEVANT IF IDEENABLE = TRUE) |
||||
|
HDSKCAPACITY .EQU 64 ; CAPACITY OF DEVICE (IN MB) |
||||
|
; |
||||
|
PPKENABLE .EQU FALSE ; TRUE FOR PARALLEL PORT KEYBOARD |
||||
|
KBDENABLE .EQU TRUE ; TRUE FOR PS/2 KEYBOARD ON I8242 |
||||
|
; |
||||
|
TTYENABLE .EQU TRUE ; INCLUDE TTY EMULATION SUPPORT |
||||
|
ANSIENABLE .EQU TRUE ; INCLUDE ANSI EMULATION SUPPORT |
||||
|
; |
||||
|
BOOTTYPE .EQU BT_MENU ; BT_MENU (WAIT FOR KEYPRESS), BT_AUTO (BOOT_DEFAULT AFTER BOOT_TIMEOUT SECS) |
||||
|
BOOT_TIMEOUT .EQU 20 ; APPROX TIMEOUT IN SECONDS FOR AUTOBOOT, 0 FOR IMMEDIATE |
||||
|
BOOT_DEFAULT .EQU 'R' ; SELECTION TO INVOKE AT TIMEOUT |
||||
|
; |
||||
|
BAUDRATE .EQU 38400 ; IN BPS: 1200, 9600, 38400, ..., 115200 |
||||
|
TERMTYPE .EQU TERM_ANSI ; TERM_TTY=0, TERM_ANSI=1, TERM_WYSE=2 |
||||
@ -0,0 +1,662 @@ |
|||||
|
;__CVDUDRIVER_______________________________________________________________________________________ |
||||
|
; |
||||
|
; COLOR VDU DRIVER FOR N8VEM PROJECT |
||||
|
; |
||||
|
; WRITTEN BY: DAN WERNER -- 11/4/2011 |
||||
|
; REMAINDER WRITTEN BY: DAN WERNER -- 11/7/2009 |
||||
|
; ROMWBW ADAPTATION BY: WAYNE WARTHEN -- 11/9/2012 |
||||
|
;__________________________________________________________________________________________________ |
||||
|
; |
||||
|
;__________________________________________________________________________________________________ |
||||
|
; DATA CONSTANTS |
||||
|
;__________________________________________________________________________________________________ |
||||
|
; |
||||
|
CVDU_STAT .EQU $E4 ; READ M8563 STATUS |
||||
|
CVDU_REG .EQU $E4 ; SELECT M8563 REGISTER |
||||
|
CVDU_DATA .EQU $EC ; READ/WRITE M8563 DATA |
||||
|
; |
||||
|
;__________________________________________________________________________________________________ |
||||
|
; BOARD INITIALIZATION |
||||
|
;__________________________________________________________________________________________________ |
||||
|
; |
||||
|
CVDU_INIT: |
||||
|
LD A,14 |
||||
|
LD (CVDU_COLOR),A |
||||
|
XOR A |
||||
|
LD (CVDU_X),A |
||||
|
LD (CVDU_Y),A |
||||
|
LD DE,0 |
||||
|
LD (CVDU_DISPLAYPOS),DE |
||||
|
LD (CVDU_DISPLAY_START),DE |
||||
|
|
||||
|
CALL CVDU_CRTINIT |
||||
|
CALL CVDU_LOADFONT |
||||
|
LD A,'#' |
||||
|
LD DE,$800 |
||||
|
CALL CVDU_FILL |
||||
|
CALL CVDU_XY |
||||
|
|
||||
|
XOR A |
||||
|
RET |
||||
|
; |
||||
|
;__________________________________________________________________________________________________ |
||||
|
; CHARACTER I/O (CIO) FUNCTION JUMP TABLE |
||||
|
;__________________________________________________________________________________________________ |
||||
|
; |
||||
|
CVDU_DISPCIO: |
||||
|
LD A,B ; GET REQUESTED FUNCTION |
||||
|
AND $0F ; ISOLATE SUB-FUNCTION |
||||
|
JR Z,CVDU_CIOIN |
||||
|
DEC A |
||||
|
JR Z,CVDU_CIOOUT |
||||
|
DEC A |
||||
|
JR Z,CVDU_CIOIST |
||||
|
DEC A |
||||
|
JR Z,CVDU_CIOOST |
||||
|
CALL PANIC |
||||
|
; |
||||
|
CVDU_CIOIN: |
||||
|
JP KBD_READ |
||||
|
; |
||||
|
CVDU_CIOIST: |
||||
|
JP KBD_STAT |
||||
|
; |
||||
|
CVDU_CIOOUT: |
||||
|
JP CVDU_VDAWRC |
||||
|
; |
||||
|
CVDU_CIOOST: |
||||
|
XOR A |
||||
|
INC A |
||||
|
RET |
||||
|
; |
||||
|
;__________________________________________________________________________________________________ |
||||
|
; VIDEO DISPLAY ADAPTER (VDA) FUNCTION JUMP TABLE |
||||
|
;__________________________________________________________________________________________________ |
||||
|
; |
||||
|
CVDU_DISPVDA: |
||||
|
LD A,B ; GET REQUESTED FUNCTION |
||||
|
AND $0F ; ISOLATE SUB-FUNCTION |
||||
|
|
||||
|
JR Z,CVDU_VDAINI |
||||
|
DEC A |
||||
|
JR Z,CVDU_VDAQRY |
||||
|
DEC A |
||||
|
JR Z,CVDU_VDARES |
||||
|
DEC A |
||||
|
JR Z,CVDU_VDASCS |
||||
|
DEC A |
||||
|
JR Z,CVDU_VDASCP |
||||
|
DEC A |
||||
|
JR Z,CVDU_VDASAT |
||||
|
DEC A |
||||
|
JR Z,CVDU_VDASCO |
||||
|
DEC A |
||||
|
JR Z,CVDU_VDAWRC |
||||
|
DEC A |
||||
|
JR Z,CVDU_VDAFIL |
||||
|
DEC A |
||||
|
JR Z,CVDU_VDASCR |
||||
|
DEC A |
||||
|
JP Z,KBD_STAT |
||||
|
DEC A |
||||
|
JP Z,KBD_FLUSH |
||||
|
DEC A |
||||
|
JP Z,KBD_READ |
||||
|
CALL PANIC |
||||
|
|
||||
|
CVDU_VDAINI: |
||||
|
CALL CVDU_INIT |
||||
|
XOR A |
||||
|
RET |
||||
|
|
||||
|
CVDU_VDAQRY: |
||||
|
CALL PANIC |
||||
|
|
||||
|
CVDU_VDARES: |
||||
|
JP CVDU_INIT |
||||
|
|
||||
|
CVDU_VDASCS: |
||||
|
CALL PANIC |
||||
|
|
||||
|
CVDU_VDASCP: |
||||
|
LD A,E |
||||
|
LD (CVDU_X),A |
||||
|
LD A,D |
||||
|
LD (CVDU_Y),A |
||||
|
CALL CVDU_XY |
||||
|
XOR A |
||||
|
RET |
||||
|
|
||||
|
CVDU_VDASAT: |
||||
|
; FIX: NOT IMPLEMENTED!!! |
||||
|
CALL PANIC |
||||
|
|
||||
|
CVDU_VDASCO: |
||||
|
; NOT SUPPORTED!!! |
||||
|
CALL PANIC |
||||
|
|
||||
|
CVDU_VDAWRC: |
||||
|
LD A,E |
||||
|
CALL CVDU_PUTCHAR |
||||
|
|
||||
|
; RETURN WITH SUCCESS |
||||
|
XOR A |
||||
|
RET |
||||
|
|
||||
|
CVDU_VDAFIL: |
||||
|
LD A,E |
||||
|
EX DE,HL |
||||
|
CALL CVDU_FILL |
||||
|
XOR A ; RESULT = 0 |
||||
|
RET |
||||
|
|
||||
|
CVDU_VDASCR: |
||||
|
; FIX: IMPLEMENT REVERSE SCROLLING!!! |
||||
|
LD A,E |
||||
|
OR A |
||||
|
RET Z |
||||
|
PUSH DE |
||||
|
CALL CVDU_SCROLL |
||||
|
POP DE |
||||
|
DEC E |
||||
|
JR CVDU_VDASCR |
||||
|
; |
||||
|
CVDU_WAITRDY: |
||||
|
; IN A,(CVDU_STREG) ; READ STATUS |
||||
|
; OR A ; SET FLAGS |
||||
|
; RET M ; IF BIT 7 SET, THEN READY! |
||||
|
; JR CVDU_WAITRDY ; KEEP CHECKING |
||||
|
; |
||||
|
;__CVDU_CRTINIT_____________________________________________________________________________________ |
||||
|
; |
||||
|
; INIT 8563 VDU CHIP |
||||
|
;__________________________________________________________________________________________________ |
||||
|
CVDU_CRTINIT: |
||||
|
LD B,$00 ; B = 0 |
||||
|
LD HL,CVDU_INIT8563 ; HL = POINTER TO THE DEFAULT VALUES |
||||
|
CVDU_CRTINIT1: |
||||
|
LD A,(HL) ; GET VALUE |
||||
|
CALL CVDU_WREG ; WRITE IT |
||||
|
INC HL |
||||
|
INC B |
||||
|
LD A,B |
||||
|
CP 37 |
||||
|
JR NZ,CVDU_CRTINIT1 ; LOOP UNTIL DONE |
||||
|
RET |
||||
|
; |
||||
|
;__CVDU_LOADFONT____________________________________________________________________________________ |
||||
|
; |
||||
|
; LOAD SCREEN FONT |
||||
|
;__________________________________________________________________________________________________ |
||||
|
CVDU_LOADFONT: |
||||
|
LD HL,$2000 ; SET FONT LOCATION |
||||
|
LD B,18 ; SET UPDATE ADDRESS IN VDU |
||||
|
LD A,H |
||||
|
CALL CVDU_WREG ; WRITE IT |
||||
|
LD B,19 ; SET UPDATE ADDRESS IN VDU |
||||
|
LD A,L |
||||
|
CALL CVDU_WREG ; WRITE IT |
||||
|
LD BC,$0020 ; FONT SIZE |
||||
|
LD HL,CVDU_FONTDATA ; FONT DATA |
||||
|
CVDU_LOADFONT1: |
||||
|
IN A,(CVDU_STAT) ; READ ADDRESS/STATUS REGISTER |
||||
|
BIT 7,A ; IF BIT 7 = 1 THAN AN UPDATE STROBE HAS BEEN OCCURED |
||||
|
JR Z,CVDU_LOADFONT1 ; WAIT FOR READY |
||||
|
LD A,31 |
||||
|
OUT (CVDU_REG),A ; SELECT REGISTER |
||||
|
CVDU_LOADFONT2: |
||||
|
IN A,(CVDU_STAT) ; READ ADDRESS/STATUS REGISTER |
||||
|
BIT 7,A ; IF BIT 7 = 1 THAN AN UPDATE STROBE HAS BEEN OCCURED |
||||
|
JR Z,CVDU_LOADFONT2 ; WAIT FOR READY |
||||
|
LD A,(HL) |
||||
|
OUT (CVDU_DATA),A ; PUT DATA |
||||
|
INC HL |
||||
|
DJNZ CVDU_LOADFONT1 |
||||
|
DEC C |
||||
|
JP NZ,CVDU_LOADFONT1 |
||||
|
RET |
||||
|
;__CVDU_WREG________________________________________________________________________________________ |
||||
|
; |
||||
|
; WRITE VALUE IN A TO REGISTER IN B |
||||
|
; B: REGISTER TO UPDATE |
||||
|
; A: VALUE TO WRITE |
||||
|
;__________________________________________________________________________________________________ |
||||
|
CVDU_WREG: |
||||
|
PUSH AF ; STORE AF |
||||
|
CVDU_WREG1: |
||||
|
IN A,(CVDU_STAT) ; read address/status register |
||||
|
BIT 7,A ; if bit 7 = 1 than an update strobe has been occured |
||||
|
JR Z,CVDU_WREG1 ; wait for ready |
||||
|
LD A,B ; |
||||
|
OUT (CVDU_REG),A ; select register |
||||
|
CVDU_WREG2: |
||||
|
IN A,(CVDU_STAT) ; read address/status register |
||||
|
BIT 7,A ; if bit 7 = 1 than an update strobe has been occured |
||||
|
JR Z,CVDU_WREG2 ; wait for ready |
||||
|
POP AF ; |
||||
|
OUT (CVDU_DATA),A ; PUT DATA |
||||
|
RET |
||||
|
; |
||||
|
;__CVDU_GREG________________________________________________________________________________________ |
||||
|
; |
||||
|
; GET VALUE FROM REGISTER IN B PLACE IN A |
||||
|
; B: REGISTER TO GET |
||||
|
; A: VALUE |
||||
|
;__________________________________________________________________________________________________ |
||||
|
CVDU_GREG: |
||||
|
IN A,(CVDU_STAT) ; read address/status register |
||||
|
BIT 7,A ; if bit 7 = 1 than an update strobe has been occured |
||||
|
JR Z,CVDU_GREG ; wait for ready |
||||
|
LD A,B ; |
||||
|
OUT (CVDU_REG) , A ; select register |
||||
|
CVDU_GREG1: |
||||
|
IN A,(CVDU_STAT) ; read address/status register |
||||
|
BIT 7,A ; if bit 7 = 1 than an update strobe has been occured |
||||
|
JR Z,CVDU_GREG1 ; wait for ready |
||||
|
IN A,(CVDU_DATA) ; GET DATA |
||||
|
RET |
||||
|
; |
||||
|
;__CVDU_XY__________________________________________________________________________________________ |
||||
|
; |
||||
|
; MOVE CURSOR TO POSITON IN CVDU_X AND CVDU_Y |
||||
|
;__________________________________________________________________________________________________ |
||||
|
CVDU_XY: |
||||
|
LD A,(CVDU_Y) |
||||
|
LD H,A |
||||
|
LD DE,80 |
||||
|
CALL MULT8 ; HL := H * E (D & L ARE CLEARED) |
||||
|
LD A,(CVDU_X) |
||||
|
LD E,A |
||||
|
ADD HL,DE |
||||
|
LD (CVDU_DISPLAYPOS),HL |
||||
|
LD DE,(CVDU_DISPLAY_START) |
||||
|
ADD HL,DE |
||||
|
LD B,14 ; SET UPDATE CSR POS IN VDU |
||||
|
LD A,H ; |
||||
|
CALL CVDU_WREG ; WRITE IT |
||||
|
INC B ; SET UPDATE CSR POS IN VDU |
||||
|
LD A,L ; |
||||
|
CALL CVDU_WREG ; WRITE IT |
||||
|
RET |
||||
|
; |
||||
|
;__CVDU_SCROLL_______________________________________________________________________________________ |
||||
|
; |
||||
|
; SCROLL THE SCREEN UP ONE LINE |
||||
|
;__________________________________________________________________________________________________ |
||||
|
CVDU_SCROLL: |
||||
|
; SET MODE TO BLOCK COPY |
||||
|
LD A,$80 |
||||
|
LD B,24 |
||||
|
CALL CVDU_WREG |
||||
|
|
||||
|
LD HL,0 ; SOURCE |
||||
|
LD C,23 ; ITERATIONS |
||||
|
CVDU_SCROLL1: |
||||
|
; BLOCK COPY DESTINATION |
||||
|
LD B,18 |
||||
|
LD A,H |
||||
|
CALL CVDU_WREG |
||||
|
INC B |
||||
|
LD A,L |
||||
|
CALL CVDU_WREG |
||||
|
|
||||
|
LD DE,80 |
||||
|
ADD HL,DE |
||||
|
|
||||
|
; BLOCK COPY SOURCE |
||||
|
LD B,32 |
||||
|
LD A,H |
||||
|
CALL CVDU_WREG |
||||
|
INC B |
||||
|
LD A,L |
||||
|
CALL CVDU_WREG |
||||
|
|
||||
|
CVDU_SCROLL2: |
||||
|
; BLOCK COPY COUNT |
||||
|
LD A,80 |
||||
|
LD B,30 |
||||
|
CALL CVDU_WREG |
||||
|
|
||||
|
; LOOP TILL DONE WITH ALL LINES |
||||
|
DEC C |
||||
|
JR NZ,CVDU_SCROLL2 |
||||
|
|
||||
|
; SET MODE TO BLOCK WRITE |
||||
|
XOR A |
||||
|
LD B,24 |
||||
|
CALL CVDU_WREG |
||||
|
|
||||
|
; SET CHARACTER TO WRITE |
||||
|
LD A,'=' |
||||
|
LD B,31 |
||||
|
CALL CVDU_WREG |
||||
|
|
||||
|
; BLOCK COPY COUNT |
||||
|
LD A,80 - 1 |
||||
|
LD B,30 |
||||
|
CALL CVDU_WREG |
||||
|
|
||||
|
RET |
||||
|
; |
||||
|
;__CVDU_RSCROLL__________________________________________________________________________________ |
||||
|
; |
||||
|
; SCROLL THE SCREEN DOWN ONE LINE |
||||
|
;__________________________________________________________________________________________________ |
||||
|
CVDU_RSCROLL: |
||||
|
PUSH AF ; STORE AF |
||||
|
PUSH HL ; STORE HL |
||||
|
PUSH BC ; STORE BC |
||||
|
|
||||
|
LD B, 24 ; GET REGISTER 24 |
||||
|
CALL CVDU_GREG ; |
||||
|
OR 80H ; TURN ON COPY BIT |
||||
|
LD E,A ; PARK IT |
||||
|
|
||||
|
LD HL, (CVDU_DISPLAY_START) ; GET UP START OF DISPLAY |
||||
|
LD BC,0730H ; |
||||
|
ADD HL,BC |
||||
|
LD D,23 ; |
||||
|
CVDU_RSCROLL1: |
||||
|
LD B, 18 ; SET UPDATE(DEST) POS IN VDU |
||||
|
LD A,H ; |
||||
|
CALL CVDU_WREG ; WRITE IT |
||||
|
LD B, 19 ; SET UPDATE(DEST) POS IN VDU |
||||
|
LD A,L ; |
||||
|
CALL CVDU_WREG ; WRITE IT |
||||
|
LD BC,0FFB0H ; |
||||
|
ADD HL,BC ; |
||||
|
LD B, 32 ; SET SOURCE POS IN VDU |
||||
|
LD A,H ; |
||||
|
CALL CVDU_WREG ; WRITE IT |
||||
|
LD B, 33 ; SET SOURCE POS IN VDU |
||||
|
LD A,L ; |
||||
|
CALL CVDU_WREG ; WRITE IT |
||||
|
|
||||
|
LD B, 24 ; SET COPY |
||||
|
LD A,E ; |
||||
|
CALL CVDU_WREG ; WRITE IT |
||||
|
|
||||
|
LD B, 30 ; SET AMOUNT TO COPY |
||||
|
LD A,050H ; |
||||
|
CALL CVDU_WREG ; WRITE IT |
||||
|
|
||||
|
DEC D |
||||
|
LD A,D ; |
||||
|
CP 00H ; |
||||
|
JP NZ,CVDU_RSCROLL1 ; LOOP TILL DONE |
||||
|
|
||||
|
|
||||
|
LD HL, (CVDU_DISPLAY_START) ; GET UP START OF DISPLAY |
||||
|
LD BC,0F50H ; |
||||
|
ADD HL,BC |
||||
|
LD D,23 ; |
||||
|
CVDU_RSCROLL2: |
||||
|
LD B, 18 ; SET UPDATE(DEST) POS IN VDU |
||||
|
LD A,H ; |
||||
|
CALL CVDU_WREG ; WRITE IT |
||||
|
LD B, 19 ; SET UPDATE(DEST) POS IN VDU |
||||
|
LD A,L ; |
||||
|
CALL CVDU_WREG ; WRITE IT |
||||
|
LD BC,0FFB0H ; |
||||
|
ADD HL,BC ; |
||||
|
LD B, 32 ; SET SOURCE POS IN VDU |
||||
|
LD A,H ; |
||||
|
CALL CVDU_WREG ; WRITE IT |
||||
|
LD B, 33 ; SET SOURCE POS IN VDU |
||||
|
LD A,L ; |
||||
|
CALL CVDU_WREG ; WRITE IT |
||||
|
|
||||
|
LD B, 24 ; SET COPY |
||||
|
LD A,E ; |
||||
|
CALL CVDU_WREG ; WRITE IT |
||||
|
|
||||
|
LD B, 30 ; SET AMOUNT TO COPY |
||||
|
LD A,050H ; |
||||
|
CALL CVDU_WREG ; WRITE IT |
||||
|
|
||||
|
DEC D |
||||
|
LD A,D ; |
||||
|
CP 00H ; |
||||
|
JP NZ,CVDU_RSCROLL2 ; LOOP TILL DONE |
||||
|
LD A,0 ; SET CURSOR TO BEGINNING OF FIRST LINE |
||||
|
LD (CVDU_Y),A ; |
||||
|
LD A,(CVDU_X) ; |
||||
|
PUSH AF ; STORE X COORD |
||||
|
LD A,0 ; |
||||
|
LD (CVDU_X),A ; |
||||
|
CALL CVDU_XY ; SET CURSOR POSITION TO BEGINNING OF LINE |
||||
|
POP AF ; RESTORE AF |
||||
|
POP BC ; RESTORE BC |
||||
|
CALL CVDU_ERASE_EOL ; ERASE SCROLLED LINE |
||||
|
LD (CVDU_X),A ; |
||||
|
CALL CVDU_XY ; SET CURSOR POSITION |
||||
|
POP HL ; RESTORE HL |
||||
|
POP AF ; RESTORE AF |
||||
|
RET ; |
||||
|
; |
||||
|
;__CVDU_ERASE_EOL__________________________________________________________________________________ |
||||
|
; |
||||
|
; PERFORM ERASE FROM CURSOR POS TO END OF LINE |
||||
|
; C=DEFAULT COLOR |
||||
|
;__________________________________________________________________________________________________ |
||||
|
CVDU_ERASE_EOL: |
||||
|
PUSH HL |
||||
|
PUSH AF |
||||
|
PUSH BC |
||||
|
|
||||
|
LD A,(CVDU_X) ; GET CURRENT CURSOR X COORD |
||||
|
LD D,A ; STORE IT IN C |
||||
|
LD A,80 ; MOVE CURRENT LINE WIDTH INTO A |
||||
|
SUB D ; GET REMAINING POSITIONS ON CURRENT LINE |
||||
|
LD B,A ; MOVE IT INTO B |
||||
|
CVDU_ERASE_EOL1: |
||||
|
LD A, ' ' ; MOVE SPACE CHARACTER INTO A |
||||
|
CALL CVDU_PUTCHAR ; |
||||
|
DJNZ CVDU_ERASE_EOL1 ; LOOP UNTIL DONE |
||||
|
CALL CVDU_XY ; MOVE CURSOR BACK TO ORIGINAL POSITION |
||||
|
POP BC |
||||
|
POP AF |
||||
|
POP HL |
||||
|
RET |
||||
|
; |
||||
|
;__CVDU_ERASE_EOS__________________________________________________________________________________ |
||||
|
; |
||||
|
; PERFORM ERASE FROM CURSOR POS TO END OF SCREEN |
||||
|
; C= DEFAULT COLOR |
||||
|
;__________________________________________________________________________________________________ |
||||
|
CVDU_ERASE_EOS: |
||||
|
PUSH HL |
||||
|
PUSH AF |
||||
|
PUSH BC |
||||
|
|
||||
|
LD HL, (CVDU_DISPLAYPOS) ; GET CURRENT DISPLAY ADDRESS |
||||
|
LD B, 18 ; SET UPDATE CSR POS IN VDU |
||||
|
LD A,H ; |
||||
|
CALL CVDU_WREG ; WRITE IT |
||||
|
LD B, 19 ; SET UPDATE CSR POS IN VDU |
||||
|
LD A,L ; |
||||
|
CALL CVDU_WREG ; WRITE IT |
||||
|
LD DE,0820H ; SET SCREEN SIZE INTO HL |
||||
|
CVDU_ERASE_EOS1: |
||||
|
LD A, ' ' ; MOVE SPACE CHARACTER INTO A |
||||
|
LD B,31 ; |
||||
|
CALL CVDU_WREG ; WRITE IT TO SCREEN, VDU WILL AUTO INC TO NEXT ADDRESS |
||||
|
DEC DE ; DEC COUNTER |
||||
|
LD A,D ; IS COUNTER 0 YET? |
||||
|
OR E ; |
||||
|
JP NZ,CVDU_ERASE_EOS1 ; NO, LOOP |
||||
|
LD DE,0820H ; SET SCREEN SIZE INTO HL |
||||
|
CVDU_ERASE_EOS2: |
||||
|
LD A, (CVDU_COLOR) ; MOVE COLOR INTO A |
||||
|
LD B,31 ; |
||||
|
CALL CVDU_WREG ; WRITE IT TO SCREEN, VDU WILL AUTO INC TO NEXT ADDRESS |
||||
|
DEC DE ; DEC COUNTER |
||||
|
LD A,D ; IS COUNTER 0 YET? |
||||
|
OR E ; |
||||
|
JP NZ,CVDU_ERASE_EOS2 ; NO, LOOP |
||||
|
|
||||
|
CALL CVDU_XY ; YES, MOVE CURSOR BACK TO ORIGINAL POSITION |
||||
|
POP BC |
||||
|
POP AF |
||||
|
POP HL |
||||
|
RET |
||||
|
; |
||||
|
;__________________________________________________________________________________________________ |
||||
|
CVDU_PUTCHAR: |
||||
|
; PLACE CHARACTER ON SCREEN, ADVANCE CURSOR |
||||
|
; A: CHARACTER TO OUTPUT |
||||
|
; |
||||
|
PUSH AF |
||||
|
LD HL,(CVDU_DISPLAY_START) |
||||
|
LD DE,(CVDU_DISPLAYPOS) |
||||
|
ADD HL,DE |
||||
|
INC DE |
||||
|
LD (CVDU_DISPLAYPOS),DE |
||||
|
LD B,18 |
||||
|
LD A,H |
||||
|
CALL CVDU_WREG |
||||
|
INC B |
||||
|
LD A,L |
||||
|
CALL CVDU_WREG |
||||
|
POP AF |
||||
|
LD B,31 |
||||
|
CALL CVDU_WREG |
||||
|
PUSH HL |
||||
|
INC HL |
||||
|
LD B,14 |
||||
|
LD A,H |
||||
|
CALL CVDU_WREG |
||||
|
INC B |
||||
|
LD A,L |
||||
|
CALL CVDU_WREG |
||||
|
POP HL |
||||
|
LD DE,$800 |
||||
|
ADD HL,DE |
||||
|
LD B,18 |
||||
|
LD A,H |
||||
|
CALL CVDU_WREG |
||||
|
INC B |
||||
|
LD A,L |
||||
|
CALL CVDU_WREG |
||||
|
LD A,(CVDU_COLOR) |
||||
|
LD B,31 |
||||
|
CALL CVDU_WREG |
||||
|
RET |
||||
|
;__________________________________________________________________________________________________ |
||||
|
CVDU_FILL: |
||||
|
; |
||||
|
; FILL AREA IN BUFFER WITH SPECIFIED CHARACTER AND CURRENT COLOR/ATTRIBUTE |
||||
|
; STARTING WITH THE CURRENT FRAME BUFFER POSITION |
||||
|
; A: FILL CHARACTER |
||||
|
; DE: NUMBER OF CHARACTERS TO FILL |
||||
|
; |
||||
|
PUSH AF |
||||
|
PUSH DE |
||||
|
LD HL,(CVDU_DISPLAY_START) |
||||
|
LD DE,(CVDU_DISPLAYPOS) |
||||
|
ADD HL,DE |
||||
|
LD B,18 |
||||
|
LD A,H |
||||
|
CALL CVDU_WREG |
||||
|
INC B |
||||
|
LD A,L |
||||
|
CALL CVDU_WREG |
||||
|
POP DE |
||||
|
POP AF |
||||
|
PUSH DE |
||||
|
LD C,A |
||||
|
CVDU_FILL1: |
||||
|
LD A,C |
||||
|
LD B,31 |
||||
|
CALL CVDU_WREG |
||||
|
DEC DE |
||||
|
LD A,D |
||||
|
OR E |
||||
|
JR NZ,CVDU_FILL1 |
||||
|
|
||||
|
LD DE,$800 |
||||
|
ADD HL,DE |
||||
|
POP DE |
||||
|
LD B,18 |
||||
|
LD A,H |
||||
|
CALL CVDU_WREG |
||||
|
INC B |
||||
|
LD A,L |
||||
|
CALL CVDU_WREG |
||||
|
LD A,(CVDU_COLOR) |
||||
|
LD C,A |
||||
|
CVDU_FILL2: |
||||
|
LD A,C |
||||
|
LD B,31 |
||||
|
CALL CVDU_WREG |
||||
|
DEC DE |
||||
|
LD A,D |
||||
|
OR E |
||||
|
JR NZ,CVDU_FILL2 |
||||
|
|
||||
|
RET |
||||
|
; |
||||
|
;================================================================================================== |
||||
|
; VDU DRIVER - DATA |
||||
|
;================================================================================================== |
||||
|
; |
||||
|
CVDU_X .DB 0 ; CURSOR X |
||||
|
CVDU_Y .DB 0 ; CURSOR Y |
||||
|
CVDU_COLOR .DB 0 ; CURRENT COLOR |
||||
|
CVDU_DISPLAYPOS .DW 0 ; CURRENT DISPLAY POSITION |
||||
|
CVDU_DISPLAY_START .DW 0 ; CURRENT DISPLAY POSITION |
||||
|
; |
||||
|
;================================================================================================== |
||||
|
; VDU DRIVER - 8563 REGISTER INITIALIZATION |
||||
|
;================================================================================================== |
||||
|
; |
||||
|
; EGA 720X368 9-BIT CHARACTERS |
||||
|
; - requires 16.257Mhz oscillator frequency |
||||
|
; |
||||
|
CVDU_INIT8563: |
||||
|
.DB 97 ; 0: hor. total - 1 |
||||
|
.DB 80 ; 1: hor. displayed |
||||
|
.DB 85 ; 2: hor. sync position |
||||
|
.DB $14 ; 3: vert/hor sync width or 0x4F -- MDA |
||||
|
.DB 26 ; 4: vert total |
||||
|
.DB 2 ; 5: vert total adjust |
||||
|
.DB 25 ; 6: vert. displayed |
||||
|
.DB 26 ; 7: vert. sync postition |
||||
|
.DB 0 ; 8: interlace mode |
||||
|
.DB 13 ; 9: char height - 1 |
||||
|
.DB (2<<5)+12 ; 10: cursor mode, start line |
||||
|
.DB 13 ; 11: cursor end line |
||||
|
.DB 0 ; 12: display start addr hi |
||||
|
.DB 0 ; 13: display start addr lo |
||||
|
.DB 7 ; 14: cursor position hi |
||||
|
.DB 128 ; 15: cursor position lo |
||||
|
.DB 1 ; 16: light pen vertical |
||||
|
.DB 1 ; 17: light pen horizontal |
||||
|
.DB 0 ; 18: update address hi |
||||
|
.DB 0 ; 19: update address lo |
||||
|
.DB 8 ; 20: attribute start addr hi |
||||
|
.DB 0 ; 21: attribute start addr lo |
||||
|
.DB $89 ; 22: char hor size cntrl 0x78 |
||||
|
.DB 13 ; 23: vert char pixel space - 1, increase to 13 with new font |
||||
|
.DB 0 ; 24: copy/fill, reverse, blink rate; vertical scroll |
||||
|
.DB $48 ; 25: gr/txt, color/mono, pxl-rpt, dbl-wide; horiz. scroll |
||||
|
.DB $E0 ; 26: fg/bg colors (monochr) |
||||
|
.DB 0 ; 27: row addr display incr |
||||
|
.DB $20+(1<<4) ; 28: char set addr; RAM size (64/16) |
||||
|
.DB 13 ; 29: underline position |
||||
|
.DB 0 ; 30: word count - 1 |
||||
|
.DB 0 ; 31: data |
||||
|
.DB 0 ; 32: block copy src hi |
||||
|
.DB 0 ; 33: block copy src lo |
||||
|
.DB 6 ; 34: display enable begin |
||||
|
.DB 88 ; 35: display enable end |
||||
|
.DB 0 ; 36: refresh rate |
||||
|
|
||||
|
; .DB 126,80,102,73,32,224,25,29,252,231,160,231,0,0,7,128 |
||||
|
; .DB 18,23,15,208,8,32,120,232,32,71,240,0,47,231,79,7,15,208,125,100,245 |
||||
|
; |
||||
|
;================================================================================================== |
||||
|
; CVDU DRIVER - FONT DATA |
||||
|
;================================================================================================== |
||||
|
; |
||||
|
#INCLUDE "cvdu_font.asm" |
||||
File diff suppressed because it is too large
Loading…
Reference in new issue