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BIOS2.MAC
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;
; Altair-DOS 3.5r BIOS services (TPA CP/M wrappers - BDOS/BIOS, interbank (MMU) and ISR routines)
;
;The IOBYTE lives at address 3 (in the Zero Page) and should be changed using
;BDOS calls 7 and 8 (get/set IOBYTE). The value is bitmapped:
;
; Bits Bits 6,7 Bits 4,5 Bits 2,3 Bits 0,1
; Device LIST PUNCH READER CONSOLE
;
; Value
; 00 TTY: TTY: TTY: TTY:
; 01 CRT: PTP: PTR: CRT:
; 10 LPT: UP1: UR1: BAT:
; 11 UL1: UP2: UR2: UC1:
;
;* BAT = batch mode. Use the current Reader for console input, and the current
; List (printer) device as the console output.
;
; * CRT = Standard console (keyboard and terminal screen).
; * LPT = Standard line printer.
; * PTP = Standard Paper Tape Punch.
; * PTR = Standard Paper Tape Reader.
; * TTY = Teletype device, eg a serial port.
; * UC1 = User defined (ie implementation dependent) console device.
; * UL1 = User defined (ie implementation dependent) printer device.
; * UPn = User defined (ie implementation dependent) output device.
; * URn = User defined (ie implementation dependent) input device.
;
;========================= TTY values =======================
;
TTYBEG EQU 0F120h ; IDEBDOS(F100..F11F), MTTY(F120..F13D), MOVEBUF(F162..F1E1)
MTTY EQU TTYBEG
TTYBUF EQU mttyend-mttybeg+TTYBEG ; LOW TTYBUF <= 255-TTYSIZE !!! because
; H=const, L=incrementing -> mod 256 align
TTYSIZE EQU MOVEBUF-TTYBUF ; TTY buffer size <= 126
TTYPTR EQU 0F3F4h ; offset of next free byte in tty buffer = TTYBUF[TTYPTR]
; (=0FFh if no_interrupts=poll mode)
TTYCUR EQU 0F3F3h ; current returned pointer from TTYBUF
;
;
UART_DATA equ 0F764h
UART_CTL equ 0F765h
;
; Îòïðàâêà áàéòà - çàïèñü â ïîðò F764.
; Ïðèåì áàéòà - ÷òåíèå ïîðòà F764.
; Êîíòðîëü ñîñòîÿíèÿ ïåðåäà÷è - ïîðò F765 íà ÷òåíèå:
; D7 - TX_Ready (0 = èäåò îòïðàâêà áàéòà, ïîðò íå ãîòîâ. 1 = ìîæíî çàïèñûâàòü ñëåäóþùèé áàéò äëÿ îòïðàâêè)
; D6 - RX_Status (0 = íåò íîâîãî ïðèíÿòîãî áàéòà. 1 = ïðèíÿò íîâûé áàéò. Ïîñëå ñ÷èòûâàíèÿ áàéòà èç F764 ýòîò áèò ñáðàñûâàåòñÿ â 0).
; Óïðàâëåíèå ðåæèìàìè - ïîðò F765 íà çàïèñü:
; D0, D1 - Ñêîðîñòè UART (0=4800, 1=9600, 2=19200, 3=38400)
; D6 - "1" = ðàçðåøàåò ïðåðûâàíèå ïî ïðèåìó áàéòà. Íà ØÄ ñòàâèòñÿ 0FDh.
;
; Ïåðåäà÷à áàéòà ñ ïðåðûâàíèÿìè íå ñâÿçàíà, è êîíòðîëèðóåòñÿ ñ÷èòûâàíèåì ñ ïîðòà F765 ñèãíàëà TX_Ready
;
; ===========================================================
;
; BDOS wrapper at page 2
;
BDOS: JP DOOR
;
; ×ÅËÔÏÒÁ ÏÛÉÂÏË BDOS
XERR1: DW ERR1 ; bad sector
XERR2: DW ERR2 ; select
XERR3: DW ERR3 ; disk read/only
XERR4: DW ERR4 ; file read/only
BERR1: DB 2
DW MERR1
BERR2: DB 2
DW MERR2
BERR3: DB 2
DW MERR3
BERR4: DB 2
DW MERR4
DOOR: CALL ASKSEG2
LD B,A
LD A,(YBDOS)
LD HL,(YBDOS+1)
CALL BCALL
bit 7, c ; do not process BDOS functions over 128
ret nz
;
; 20100412. Quicker process BDOS direct console functions - do not interbank calls to WORKPAGE
;
ld a,c
cp 11 ; console status
jr z, TDA06 ; CONSTATUS
LD HL, BDOS1
cp 6 ; direct input\output, no echo
jp nz, BCALL_1
;
BDOSF6: LD A,E
INC A
Jr Z, BF6NEXT
INC A
Jr Z, TDA06 ; CONSTATUS
ld c, e
Jr TDA0C ; CONOUT
;
BF6NEXT:CALL TDA06 ; CONSTATUS
OR A
CALL NZ, TDA09 ; CONIN
RET
;
MERR1: LD HL,(XERR1)
JP (HL)
ERR1: LD HL,R_BADS
JR COMMERR
;
MERR2: LD HL,(XERR2)
JP (HL)
ERR2: ld a, DEFAULT_DISK
LD (ACTDSK),A
LD HL,R_SELD
JR COMMERR
;
MERR3: LD HL,(XERR3)
JP (HL)
ERR3: LD HL,R_DSKRO
JR COMMERR
;
MERR4: LD HL,(XERR4)
JP (HL)
ERR4: LD HL,R_FLRO
COMMERR:LD A,WORKPAGE
JP BJMP
;
; BIOS wrapper at page 2
;
BIOS:
TDA00: JP WARMSTART ; ÈÏÌ. ÓÔÁÒÔ
TDA03: JP WARMSTART ; ÔÅÐÌ. ÓÔÁÒÔ
TDA06: JP CONSTATUS ; ÓÔÁÔÕÓ ËÏÎÓÏÌÉ
TDA09: JP CONIN ; ÞÔÅÎÉÅ Ó ËÌÁ×ÉÁÔÕÒÙ
TDA0C: JP CONOUT ; ×Ù×ÏÄ ÎÁ ËÏÎÓÏÌØ
TDA0F: JP LSTOUT ; ×Ù×ÏÄ ÎÁ ÐÒÉÎÔÅÒ
TDA12: JP AUXOUT ; ×Ù×ÏÄ ÎÁ ÕÓÔÒÏÊÓÔ×Ï ×Ù×ÏÄÁ
TDA15: JP AUXIN ; ××ÏÄ Ó ÕÓÔÒÏÊÓÔ×Á ××ÏÄÁ
TDA18: JP SLTR00 ; ÕÓÔÁÎÏ×ËÁ ÄÏÒÏÖËÉ 00
TDA1B: JP SLDSK ; ×ÙÂÒÁÔØ ÄÉÓË
TDA1E: JP SLTRK ; ÕÓÔÁÎÏ×ÉÔØ ÄÏÒÏÖËÕ
TDA21: JP SLSEC ; ÕÓÔÁÎÏ×ÉÔØ ÓÅËÔÏÒ
TDA24: JP SLDMA ; ÕÓÔÁÎÏ×ÉÔØ DMA
TDA27: JP READS ; ÞÔÅÎÉÅ ÓÅËÔÏÒÁ
TDA2A: JP WRITES ; ÚÁÐÉÓØ ÓÅËÔÏÒÁ
TDA2D: JP LSTSTAT ; ÓÔÁÔÕÓ ÐÒÉÎÔÅÒÁ
TDA30: JP TRANSSEC ; ÐÅÒÅËÏÄÉÒÏËÁ ÓÅËÔÏÒÏ×
;
; õÓÔÁÎÏ×ËÁ JUMPÏ× × ÏÂÌÁÓÔÉ Ó×ÑÚÉ CP/M (0-100h)
SETJUMPS:
LD A,0C3H
LD (0),A
LD HL,BIOS+3
LD (1),HL
LD (5),A
LD HL,BDOS
LD (6),HL
RET
WARMSTART:
LD SP,0F3C0H
CALL SETJUMPS ; õÓÔÁÎÏ×ËÁ JUMPÏ× × ÏÂÌÁÓÔÉ
; Ó×ÑÚÉ CP/M (0-100h)
LD BC,80h
CALL SLDMA
; õÓÔ. ÐÏÒÔÏ× FB, FA, F8 ÐÏ ÑÞÅÊËÁÍ ËÏÎÆÉÇÕÒÁÃÉÉ
; F3FB, F3FA, F3F8.
LD A,(sysPFB)
OUT (PFB),A
WARM_S: LD HL,CCPFLUSH ; FLUSH ; ÓÂÒÏÓ ÆÌÁÖËÏ× É ÏÞÉÓÔËÁ
CALL BCALL_1 ; ÂÕÆÅÒÁ ÉÍÅÎ ÀÚÅÒÏ×., C=WARMDISK
CALL SLDSK
LD A,H
OR L
JR Z,WARM_S
; ÎÅÓÕÝÅÓÔÕÀÝÉÊ ÄÉÓË -> ÃÉËÌ ÎÁ Warm_S
JP BEGCCP
;
CONSTATUS:
ld a, (IO_BYTE)
and 3 ; TTY=D1D0=00, CRT=D1D0=01
LD HL, YCONST
jr nz, RETPROC
;
TTYSTATUS: ;
;
; Out: A=0FFH, if next char ready for read
; A=0 if buffer empty / no input char
;
; ×òåíèå ñ êîíñîëè.
; Ïðèçíàê íàëè÷èÿ äàííûõ (CONSTATUS):
; - ðåæèì INT (TTYPTR<>0FFh): TTYPTR<>TTYCUR
; - ðåæèì POLL (TTYPTR=0FFh): PF765.D6=1
;
ld a, (TTYPTR)
ld hl, TTYCUR
inc a
jr z, pollstatus
; INT
dec a
bit 7, a
jr nz, TTYST1
and 7Fh
cp (hl)
jr TTYST1
; POLL
pollstatus:
ld a, (UART_CTL)
and 40h
TTYST1: ld a, 0FFh
ret nz ; D6=1 -> UART ready for read byte
xor a
ret ; D6=0 -> UART not ready
;
LSTSTAT:LD HL,YLSTST
JR RETPROC
;
AUXIN: LD HL,YAUXIN
JR RETPROC
AUXOUT: LD HL,YAUXOUT
JR YPROC
;
LSTOUT: LD HL,YLSTOUT
;
; ÐÁÒÁÍÅÔÒÙ Æ-ÃÉÑÍ ÐÅÒÅÄÁÀÔÓÑ/ÐÏÌÕÞÁÀÔÓÑ × BC, ÕËÁÚÁÔÅÌØ ÎÁ
; ÛÌÀÚ(GATE) - HL, ×ÙÚÙ×ÁÀÝÉÊ ÓÅÇÍÅÎÔ - E
YPROC: LD A,(HL)
INC HL
LD E,(HL)
INC HL
LD H,(HL)
LD L,E
JP BCALL ; ×ÙÚ×ÁÔØ ÃÅÐÏÞËÕ ÛÌÀÚÏ×
;
CONIN: ld a, (IO_BYTE)
and 3 ; TTY=D1D0=00, CRT=D1D0=01
jr z, TTYIN
LD HL, YCONIN
RETPROC:CALL YPROC
LD A,C
RET
;
TTYIN:
;
; Out: A=readed_char. Does infinitive wait for input char if input queue is empty
;
; ×èòàåì áàéò (îæèäàåì äàííûõ â íàëè÷èè):
; - ðåæèì INT: âîçâðàùàåì TTYBUF[TTYCUR], TTYCUR:=(TTYCUR+1) mod TTYSIZE
; åñëè TTYPTR and 80h <> 0 (buf full), òî
; TTYPTR=TTYPTR and 7Fh, äàííûå èç PF764 ïèøåì â TTYBUF[TTYPTR]
; - ðåæèì POLL: âîçâðàùàåì äàííûå ñ ïîðòà PF764
;
call TTYSTATUS ; hl=TTYCUR
jr z, TTYIN ; wait for incoming char
ld a, (TTYPTR)
inc a
jr nz, intread ; if non-interrupt mode
pollread:
ld a, (UART_DATA)
ret
intread:
ld a, (hl) ; A=TTYCUR
push hl
ld hl, TTYBUF
add a, l
ld l, a
ld a, (hl) ; A=TTYBUF[TTYCUR]
pop hl ; hl=TTYCUR
push af
inc (hl)
ld a, TTYSIZE
sub (hl)
jr nz, TTYIN1
ld (hl), a ; TTYCUR:=(TTYCUR+1) mod TTYSIZE
TTYIN1: ld hl, TTYPTR
bit 7, (hl)
jr z, TTYIN2 ; if buffer not full
ld a, (hl)
and 7Fh
ld (hl), a ; buffer not full now because TTYBUF[TTYCUR] readed
ld hl, TTYBUF
add a, l
ld l, a
ld a, (UART_DATA)
ld (hl), a ; TTYBUF[TTYPTR]:=A
TTYIN2: pop af ; A=TTYBUF[TTYCUR]
ret
;
;
CONOUT: ld a, (IO_BYTE)
and 3 ; TTY=D1D0=00, CRT=D1D0=01
LD HL, YCONOUT
jr nz, YPROC
TTYOUT:
;
; Inp: C=char for output. Check (and wait) for queue ready before output the char
;
pollwrite:
ld a, (UART_CTL)
rlc a ; D7=1 -> ready for send data
jr nc, pollwrite ; wait for output queue is empty
ld a, c
ld (UART_DATA), a
ret
;
DRVTAB:
IF BOOTFDD
defb 0 ; Map fdd0 to drive "A"
ELSE
defb 0FFh
ENDIF
defb 0FFh
IF BOOTFDD
defb 0FFh
ELSE
defb 3 ; Map IDE/SD slot 0 to drive "C" (0,1=floppy; 2=vdisk 3,4,5=IDE/SD)
ENDIF
defs 13, 0FFh
;
SLDSK: LD HL,YSELDISK
CALL YPROC
PUSH HL
LD HL,DRVTAB
ld b,0
add hl,bc ; ðåòåëïäéòï÷ëá
ld c, (hl)
POP HL
ld a, c
LD (WDISK),A
CP 0FEH
RET Z
LD HL,SELDISK
JR BCALL_1 ; ÷ùâïò äéóëá
;
SLTR00: LD HL,YHOME
CALL YPROC
LD BC,0
JR SLTRK0
;
SLTRK: LD HL,YSELTRK
CALL YPROC
SLTRK0: LD HL,SELTRK
JR SLSEC0
;
SLSEC: LD HL,YSELSEC
CALL YPROC
LD HL,SELSEC
SLSEC0: ld a,(WDISK)
cp 0FEh
ret z
BCALL_1:LD A, WORKPAGE
JP BCALL
;
SLDMA: LD HL,YSETDMA
CALL YPROC
LD HL,SETDMA
JR BCALL_1
;
READS: CALL ASKSEG2
LD HL,READSEC
push hl
LD HL,YREAD
RDWRCOM:push hl
LD A,(CALBANK)
LD D,A
LD HL,GETBANK ; óÏÏÂÒÁÚÉÔØ, × ËÁËÏÊ ÂÁÎË
CALL BCALL_1 ; ×ÙÄÁÔØ ÄÁÎÎÙÅ
pop hl ; hl=YREAD/YWRITE
CALL YPROC
pop hl ; hl=READSEC/WRITESEC
LD E,A
LD A,(WDISK)
CP 0FEH
LD A,E
RET Z ; ÷îåûîéê äòáê÷åò äéóëá
JR BCALL_1
;
WRITES: CALL ASKSEG2
LD HL,WRITESEC
push hl
LD HL,YWRITE
JR RDWRCOM
TRANSSEC:
LD L,C
LD H,0
INC HL
RET
;
ASKSEG2:ld hl,2
ASKSEGM:add hl,sp ; ðòïðõóë áäòåóá ÷ïú÷òáôá
; éú ð/ð ASKSEGM
PUSH DE ; ïðòåäåìñåí éú ëáëïçï
PUSH BC ; óåçíåîôá ÷ùú÷áîá BDOS
ld e,(hl)
inc hl
ld d,(hl) ; DE = áäòåó ÷ïú÷òáôá
push hl
ld hl,BRET
or a ; ÐÒÏ×ÅÒËÁ: ËÁËÉÍ CALL'ÏÍ
sbc hl,de ; ÂÙÌÁ ×ÙÚ×ÁÎÁ BDOS-ÐÒÏÓÔÙÍ
pop hl ; (BANK=2) ÉÌÉ ÍÅÖÂÁÎËÏ×ÙÍ
ld a,TPAPAGE ; BANK TPA
jp nz,CALLER ; if return <> 0F207h
inc hl
ld a,(hl) ; A=PF9
inc hl
inc hl
ld d,(hl)
inc hl
ld h,(hl)
ld l,d ; hl=stack pointer
inc hl
CALLER: PUSH AF
LD (CALBANK),A
CALL BLDB ; B=óô.â. áäòåóá ÷ùúï÷á
POP AF
LD C,B
LD B,4
CALLER1:RL C
RLA
DJNZ CALLER1
POP BC
POP DE
RET ; A=÷ùúù÷áàýéê óåçíåîô
;
CALBANK:DEFB 2
WDISK: DEFB 0
;
ENDDOSCODE:
;
DPH_A: defw 0 ; XLT ; FLOPPY 0
defs 6h,0 ; WORK
defw DIRBUF ; DIRBUF
defw DPB_A ; DPB
defw CSV_A ; CSV
defw ALV_A ; ALV
defb 54h
defb 54h
defb 0
defb 7
defb 1
defb 3
defb 0
defb 10h
DDAD0: defb 0
DPB_A: defw 38h ; SPT ; FLOPPY 0
defb 4 ; BSH
defb 0fh ; BLM
defb 0 ; EXM
defw 228h ; DSM
defw 7fh ; DRM
defw 0c0h ; AL0,AL1
defw 20h ; CKS ; catalog 128 records
defw 02h ; OFF
DPH_B: defw 0 ; XLT ; FLOPPY 1
defs 6h,0 ; WORK
defw DIRBUF ; DIRBUF
defw DPB_B ; DPB
defw CSV_B ; CSV
defw ALV_B ; ALV
defb 54h
defb 54h
defb 0
defb 7
defb 1
defb 3
defb 0
defb 11h
DDAFC: defb 0
DPB_B: defw 38h ; SPT ; FLOPPY 1
defb 4 ; BSH
defb 0fh ; BLM
defb 0 ; EXM
defw 228h ; DSM
defw 7fh ; DRM
defw 0c0h ; AL0,AL1
defw 20h ; CKS
defw 02h ; OFF
;
; do not recompose PARIDE, DPH, DPB arrays for IDE/SD slots !
;
PARIDE0:defw LBABUF0
defw border0
defw IDEBUF0
defw DPB_C
DPH_C: defw 0 ; XLT ; IDE/SD_0
defs 6h,0 ; WORK
defw DIRBUF ; DIRBUF
defw DPB_C ; DPB
defw CSV_H0 ; CSV
defw ALV_C ; ALV
DPB_C: defw 38h ; SPT ; IDE/SD_0
defb 4 ; BSH
defb 0fh ; BLM
defb 0 ; EXM
defw 228h ; DSM
defw 7fh ; DRM
defw 0c0h ; AL0,AL1
defw 40h ; CKS ; catalog 256 records
defw 2 ; OFF
PARIDE1:defw LBABUF1
defw border1
defw IDEBUF1
defw DPB_D
DPH_D: defw 0 ; XLT ; IDE/SD_1
defs 6h,0 ; WORK
defw DIRBUF ; DIRBUF
defw DPB_D ; DPB
defw CSV_H1 ; CSV
defw ALV_D ; ALV
DPB_D: defw 127 ; SPT ; IDE/SD_1
defb 4 ; BSH
defb 0fh ; BLM
defb 0 ; EXM
defw 253 ; DSM
defw 7fh ; DRM
defw 0c0h ; AL0,AL1
defw 40h ; CKS
defw 2 ; OFF
PARIDE2:defw LBABUF2
defw border2
defw IDEBUF2
defw DPB_X
DPH_X: defw 0 ; XLT ; IDE/SD_2
defs 6h,0 ; WORK
defw DIRBUF ; DIRBUF
defw DPB_X ; DPB
defw CSV_H2 ; CSV
defw ALV_X ; ALV
DPB_X: defw 127 ; SPT ; IDE/SD_1
defb 4 ; BSH
defb 0fh ; BLM
defb 0 ; EXM
defw 253 ; DSM
defw 7fh ; DRM
defw 0c0h ; AL0,AL1
defw 40h ; CKS
defw 2 ; OFF
DPH_E: defw 0 ; XLT ; VDISK (RAMDISK)
defs 6h,0 ; WORK
defw DIRBUF ; DIRBUF
defw DPB_E ; DPB
defw 0 ; CSV
defw ALV_E ; ALV
DPB_E: defw 20H ; SPT ; VDISK (RAMDISK)
defb 3 ; BSH
defb 7 ; BLM
defb 0 ; EXM
defw 255 ; DSM
defw 3fh ; DRM
defw 0C0h ; AL0,AL1
defw 0 ; CKS
defw 1 ; OFF
DPH_R: defw 0 ; XLT ; ROMDISK
defs 6h,0 ; WORK
defw DIRBUF ; DIRBUF
defw DPB_R ; DPB
defw 0 ; CSV
defw ALV_R ; ALV
DPB_R: defw 28H ; SPT ; 40 sectors (5 kb per track)
defb 4 ; BSH
defb 0Fh ; BLM ; 2048 bytes block
defb 0 ; EXM
defw 1D4h ; DSM ; TOTAL=ORDOS+SYSTEM+DIR+DATA=64k+20k+4k+936k=1024k
defw 7fh ; DRM ; catalog=128 records
defw 0C0h ; AL0,AL1 ; catalog=4kb
defw 0 ; CKS
defw 4 ; OFF ; system = 4 tracks = 20kb
ENDBIOS EQU MARKER-3 ; EFFF=(byte)marker, EFFD=(word)stack_int
ALV_C:
ALV_D equ ALV_C ; temporary, will be calculated in CALC_ALV_D
ALV_X equ ALV_C ; temporary, will be calculated in CALC_ALV_D
ALV_B EQU ENDBIOS-64h-3Bh-21h-64h
ALV_E EQU ENDBIOS-64h-3Bh-21h ; LBA-ÎÏÍÅÒ ÐÏÓÌÅÄÎÅÇÏ ÐÒÏÞÉÔÁÎÎÏÇÏ IDE ÓÅËÔÏÒÁ
ALV_R EQU ENDBIOS-64h-3Bh
ALV_A equ ENDBIOS-64h
;
; (ALV_E-ALV_C) recommended value = 800 bytes (100Mb limit for total IDE/SD capacity)
;
; ÒÁÂÏÔÁÅÔ ÐÏÓÌÅ ÚÁÇÒÕÚÞÉËÁ ÉÚ BOOT-SECTOR × 1 ÓÔÒÁÎÉÃÅ
COLDSTART:
CALL COLDINIT
COLDST1:LD HL, COLDINIT
LD (HL),0 ; ,0
LD d, h
ld e, l
inc de
LD BC,ENDBIOS-COLDINIT-1
LDIR ; CLEAR ALV
LD HL,COLD
PUSH HL
LD A,TPAPAGE
LD (RETT+1),A
EXX
EX AF,AF'
POP HL ; HL=COLD
LD BC,COLDSTART-COLD
CALL BLDIRF1 ; LD A,WORKPAGE ðåòEëéîõìé üíõìñôïò BDOS
LD A,TPAPAGE
LD HL, coldbeg
JP BJMP
;
COLDINIT: ; input: DE = IDE/SD port address
LD A,80H
LD (sysPFB),A
OUT (PFB),A
ld a, (12) ; a=drive_sign (D4..D0: 0=MasverIde, 10h=SlaveIDE, 1=SDC, 3=SDHC, 4=ROM, 5=FDD)
ld hl, ide_8255 ; IDE: source,compiled base address
ld bc, port_tbl ; IDE: hlat table address
and 11101111b
jr z, sport00 ; if IDE mode
cp 4
jr z, COLDROM ; if ROM-disk BOOT
ld hl, SD_ADDR ; SD: source,compiled base address
ld bc, portsd_tbl ; SD: hlat table address
cp 5
jr z, cold_ide ; if FDD boot
; else SD boot
sport00:ex de, hl
;
; Correct IDE port addresses for PPA (IDE).
; Input: hl=(destination base port address)
; de=(source=compiled base port address)
; bc=hlat table address
;
xor a ; CY=0
sbc hl, de ; hl=(destination port address)-(source/compiled base port address)=offset
ex de, hl ; de=offset
sport0: ld a, (bc)
ld l, a ; hl=address of address to correct
inc bc
ld a, (bc)
ld h ,a
or l
jr z, sport1 ; end of port_tbl table
ld a, (hl) ; low part of value to correct
add a, e
ld (hl), a
inc hl
ld a, (hl) ; high part of value to correct
adc a, d
ld (hl), a
inc bc
jr sport0
;
port_tbl:
dw @@P0+1, @@P1+1, @@P2+1, @@P3+1, @@P4+1, @@P5+1, @@P6+1
dw @@P14+1,@@P15+1
dw @@P7+1, @@P8+1, @@P9+1, @@P10+1, @@P11+1, @@P12+1, @@P13+1, 0
;
portsd_tbl:
dw @@SD1+1, @@SD2+1, @@SD3+1, @@SD4+1, @@SD5+1, @@SD6+1, @@SD7+1
dw @@SD8+1, @@SD9+1, @@SD10+1, 0
;
COLDROM:
ld a,6 ; Device=ROM
ld (DRVTAB+2),a ; at 3-nd drive letter (drive C = ROM)
ld de, DPB_R
jr coldrom2
sport1:
ld de, DPB_C
coldrom2:
ld hl, 10h
ld bc, 15
ldir ; get ide HDD partition DPB where we are booting
ld l, 12 ; h=0
ld de, BORDER0+9
ld bc, 966h
mvcrc: ld a, (hl)
ld (de), a ; get partition offset (first LBA-addressed sector)
add a, c
ld c, a
dec hl
dec de
djnz mvcrc
ld (de), a ; put crc to BORDER0[0]
;
; ------------------- IDE drive init ---------------------------------
;
; Hard reset on the drive, by pulsing its reset pin.
; this should usually be followed with a call to "ide_init".
;
cold_ide:
ld a, rd_ide_8255
@@P14: ld (ide_8255_cfg), a ; config 8255 chip, read mode
@@P15: ld hl, ide_8255_ctl
ld (hl), ide_rst_line ; hard reset the disk drive
call delay10 ; de=0
ld (hl), d ; no ide control lines asserted
;
; initialize the ide drive.
;
ld a, (12) ; a=drive_sign (D4..D0: 0=MasverIde, 10h=SlaveIDE, 1=SDC, 3=SDHC, 4=ROM)
and 10h
or 10100000b
ld e, a
ld a, ide_head
call ide_wr_8 ; select the master device
; call ide_wait_ready
;
;-------------------- SD-card cold init ------------------------------
;
cold_sd:call sd_init
jr z, coldsd2 ; if card present & MSX scheme
ld hl, sd_tab1 ;
ld de, sd_tab0
ld bc, sd_tab2-sd_tab1
ldir ; else switch to N8VEM scheme
call sd_init
jr nz, coldsd1 ; if sd_init fail
ld hl, sd_tab3
ld de, RDLOOP
ld bc, sd_tab4-sd_tab3
ldir
jr coldsd2
coldsd1:ld hl, sd_tab2 ;
ld de, sd_tab0
ld bc, sd_tab3-sd_tab2
ldir ; both tests fail -> back to MSX scheme (default scheme)
coldsd2:
;
;---------------
;
LD HL,ACPMVEC
ld de,NTAB
push de
ld bc, AVECEND-AVECBEG+EE-EB+2
LDIR
;
ld hl, mttybeg
ld de, MNTBUF
ld c, mttyend-mttybeg
LDIR
;
LD HL,0F3CFH
LD (HL),0C0H ; screen start at C000
INC HL
LD (HL),30H ; ÛÉÒÉÎÁ ÜËÒÁÎÁ
INC HL
LD (HL),B ; B=0. ÆÏÎÔ ÎÁ F000
INC HL
LD (HL),0F0H
inc hl
ld (hl),B ; B=0. ÏÔËÌ. ÉÎ×ÅÒÓÉÀ
CALL 0F82DH ; ÒÁÓÐÁËÏ×ÁÔØ ÆÏÎÔ
pop hl ; HL=NTAB
LD DE,BPROC
LD BC,AVECEND-AVECBEG
LDIR ; íåöâáîëï÷ùê óåò÷éó
ld de,PRCC
ld c,EE-EB
ldir ; óïïâýåîéñ ïâ ïûéâëáè
CALL FLUSH ; SET RG.A=0
LD (TIMBUF),A
LD (BATVAR),A
LD (REPLBUF),A
LD (ETRACK0),A
LD HL,0F3F5H
LD (HL),a ; MONOCHROME
INC HL
LD (HL),00010111b
; X,X,X, LPT F600, NO CCP, ECHO ON, PROMPT ON, WIDTH 8
INC HL
LD (HL),a ; "÷ÙÇÒÕÚËÁ" ÄÒÁÊ×ÅÒÁ ËÏÎÓÏÌÉ
INC HL
LD (HL),a ; F3F8 = 0
INC HL
ld (hl),TPAPAGE ; F3F9 = 2
INC HL
LD (HL),a ; F3FA = 0
dec a ; A=0FFh
ld (BORDER1+9), a ; c=0/10h=master/slave, 1/3=SDcard, 0FFh=not used (free)
ld (BORDER2+9), a ; c=0/10h=master/slave, 1/3=SDcard, 0FFh=not used (free)
JP MMTEST ; MEMORY TEST
;
sd_tab1:
jp sd_wiggle_n8vem
jp sd_fini_n8vem
jp sd_put_n8vem
jp sd_get_n8vem
sd_tab2:
jp sd_wiggle_msx
jp sd_fini_msx
jp sd_put_msx
jp sd_get_msx
sd_tab3:
;
;RDLOOP:
ex de, hl ; hl:=buffer address
call sd_get ; data
ld (hl), a
inc hl
call sd_get ; data
ex de, hl ; de:=buffer address
jp RDJNZ
sd_tab4:
;
; Áóôåð ïóñò, åñëè TTYCUR=TTYPTR
; Áóôåð çàïîëíåí íà 100%, åñëè TTYCUR=(TTYPTR+1) mod TTYSIZE
;
; Âõîä â ISR.
; - Åñëè áóôåð çàïîëíåí íà 100%, âûõîäèì áåç ïðî÷èòûâàíèÿ ñèìâîëà
; ñ PF764 (îñòàâëÿåì àêòèâíûì ñèãíàë "íåãîòîâ" UART) è ñòàâèì
; TTYPTR=TTYPTR or 80h (D7=1)
; (óñòàíàâëèâàåì äëÿ CONIN ïðèçíàê ïîñëåäóþùåé âû÷èòêè ñèìâîëà -
; ýòî íåîáõîäèìî, ò.ê. ïðåðûâàíèå âûäàåòñÿ òîëüêî îäíàæäû)
; - Èíà÷å (åñëè â áóôåðå åñòü ñâîáîäíîå ìåñòî), ñ÷èòûâàåì áàéò ñ
; PF764, ñîõðàíÿåì åãî â TTYBUF[TTYPTR], TTYPTR:=(TTYPTR+1) mod TTYSIZE
;
mttybeg: ; TTY interrupt processor
di
push af
ld a, (TTYPTR)
inc a
jr z, TTYe ; if TTYPTR=0FFh (POLL mode)
push hl
cp TTYSIZE
jr c, TTY0
xor a
TTY0: ld hl, TTYCUR ; A=(TTYPTR+1) mod TTYSIZE
cp (hl)
jr z, TTYfull ; if buffer full (TTYPTR=TTYCUR-1)
push af
ld a, (TTYPTR)
ld hl, TTYBUF
add a, l
ld l, a
ld a, (UART_DATA)
ld (hl), a
pop af ; A=(TTYPTR+1) mod TTYSIZE
jr TTY1
TTYfull:or 80h ; POLL read flag (buffer full flag)
TTY1: ld (TTYPTR), a
pop hl
TTYe: pop af
ei
reti ; 46 bytes
mttyend:
;
ACPMVEC:
.DEPHASE
.PHASE BPROC
AVECBEG:
;
; ÍÎÏÇÏÓÔÒÁÎÉÞÎÙÊ ÓÅÒ×ÉÓ
;
BLDIR: jp MLDIR ; f201 ÍÅÖÂ. ldir
;
; Ð/Ð ÐÅÒÅÄÁÞÉ ÕÐÒÁ×ÌÅÎÉÑ (ÍÅÖÂÁÎËÏ×ÙÊ JMP).
; ÷ÈÏÄ : <A>&<HL>=<page>&<adress>
;
BJMP: out (PF9),a
jp (hl) ; jp MJMP ; f204 jump
BCALL: jp MCALL ; f207 call
BRET: jp MRET ; f20a ret
BLDB: jp MLDB ; f20d getbyte
BSTB: ; jp MSTB ; f210 setbyte
;
; Ð/Ð ÚÁÐÉÓÉ ÓÏÄÅÒÖÉÍÏÇÏ ÒÅÇ. ÷ × ÑÞÅÊËÕ ÐÏ ÁÄÒÅÓÕ {A+HL}
;
MSTB: call XDI
ld (LASTSP),sp
ld sp,FSP
ld de,(MARKER)
out (PF9),a
ld (HL),b
jr FRET
;
; Ð/Ð ÞÔÅÎÉÑ × ÒÅÇ. ÷ ÉÚ ÑÞÅÊËÉ ÐÏ ÁÄÒÅÓÕ {A+HL}
;
MLDB: call XDI
ld (LASTSP),sp
ld sp,FSP
ld de,(MARKER)
out (PF9),a
ld b,(HL)
jr FRET ; was JP
;
MOVEADR:OUT (0F9H),A
LDIR
ex af, af'
OUT (0F9H),A
RET
;
; Ð/Ð ÐÅÒÅÓÙÌËÉ (ÍÅÖÂÁÎËÏ×ÙÊ LDIR)
; ÷ÈÏÄ: á =ÂÁÎË-ÉÓÔÏÞÎÉË á' =ÂÁÎË-ÐÒÉÅÍÎÉË
; HL=ÁÄÒÅÓ-ÉÓÔÏÞÎÉË HL'=ÁÄÒÅÓ-ÐÒÉÅÍÎÉË
; BC=ËÏÌÉÞÅÓÔ×Ï ÐÅÒÅÓÙÌÁÅÍÙÈ ÂÁÊÔ
;
MLDIR: call XDI
ld (LASTSP),sp
ld sp,FSP
ld d,a
ld a,(MARKER)
ld e,a
MLDIR1: ld a,d
out (PF9),a
ld a,(hl)
inc hl
ex af,af'
exx
out (PF9),a
ex af,af'
ld (hl),a
inc hl
exx
dec bc
ld a,b
or c
jr nz,MLDIR1
FRET: ld a,e
out (PF9),a
defb 31h
LASTSP: defs 2
jr XEI
;
; ÏÂÒÁÂÏÔÞÉË ÐÒÏÇÒÁÍÍÎÙÈ ÐÒÅÒÙ×ÁÎÉÊ
INTPRG: ld b,a
ld hl,drv_kb_int
BCALL0: LD A,0
;
; Ð/Ð ×ÙÚÏ×Á ÐÏÄÐÒÏÇÒÁÍÍÙ (ÍÅÖÂÁÎËÏ×ÙÊ CALL).
; ÷ÈÏÄ : <A>&<HL>=<page>&<adress>
;
MCALL: CALL XDI
push af
ld (PUSHHL),hl
ld hl,2
add hl,sp
ld a,h
cp 0F3h
jr nz,MCALL0
pop af
jr MCALL1
MCALL0: pop af
ld sp,(F3STACK)
MCALL1: push hl
ld hl,(MARKER)
out (PF9),a
LD H,0
push hl ; ÷ óôåëå óôåë & âáîë
ld hl,BRET ; PFB ÎÅ ÚÁÐÏÍÉÎÁÅÔÓÑ
push hl ; return addres
ld (F3STACK),sp
defb 21h
PUSHHL: defw 0
push hl
jr XEI
;
; Ð/Ð ×ÏÚ×ÒÁÔÁ ÕÐÒÁ×ÌÅÎÉÑ (ÍÅÖÂÁÎËÏ×ÙÊ ret)
; îå ÐÏÒÔÉÔ ÎÉÞÅÇÏ ËÒÏÍÅ ÆÌÁÇÏ×
MRET: CALL XDI
ld (FORAF),a
ld (FORHL),hl
ld hl,0
add hl,sp
ld a,h
sub 0F3h ; cp 0F3h
jr nz,NOSKIPSP ; ÎÅ F3-ÓÔÅË - ÐÅÒÅÈÏÄ
pop hl
; ld a,h
or h ; or a
jr z,SKIPSP+1 ; ÐÅÒÅÈÏÄ, ÅÓÌÉ ÐÏÒÔ F9
jr SKIPSP ; ÐÅÒÅÈÏÄ, ÅÓÌÉ ÁÄÒÅÓ F207
NOSKIPSP:defb 31h
F3STACK:defw 0F3BFh
pop hl ; return addres
SKIPSP: pop hl ; l=PF9
ld a,l
out (PF9),a
pop hl