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BIOS0.MAC_BCK
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; BIOS best dos
PF8 EQU 0F8H
PF9 EQU 0F9H
PFB EQU 0FBH
PFROM EQU 0FEh ; 0FCH ; in-ROM CP/M start page
PROM2 EQU 009H ; Orion-PRO ROM2 page register
PROPA EQU 00Ah ; D3 - activate "ROM2-BIOS" window
ROM_PPA equ 0F500h
BPROC EQU 0F201H
DRV_INT_SERVICE EQU 0D400H ; BRET
DRV_KB_INT EQU 0D403H ; BRET
VALUE EQU 0F3F6H ; D3 (1) - WORK INTO CCP
SYSVEC EQU 0F301h
ELSIZE EQU 18 ; ÒÁÚÍÅÒ ÏÄÎÏÊ ÚÁÐÉÓÉ Ï ÄÒÁÊ×ÅÒÅ
TIMSIZE EQU 0FFH
sysPFB EQU 0F3FBH
YF3F8 EQU 0F3F8H
YF3FA EQU 0F3FAH
YF700 EQU 0F700H
YF701 EQU 0F701H
YF702 EQU 0F702H
YF703 EQU 0F703H
YF720 EQU 0F720H
partcpm equ 052h ; cpm type partition
DPBSize equ 31 ; DBP size
STACKTMP equ 0F11Eh ; defs 2
;
;
; SETTRK - ×ÙÂÉÒÁÅÔ ÄÏÒÏÖËÕ ÎÁ ÄÉÓËÅ ÐÏ ÓÏÄÅÒÖÉÍÏÍÕ
; ÒÅÇÉÓÔÒÏ×ÏÊ ÐÁÒÙ ×Ó ( ÏÂÙÞÎÏ ÎÏÍÅÒ ÄÏÒÏÖËÉ ÎÅ
; ÐÒÉ×ÙÛÁÅÔ 80D).
;
; SETSEC - ×ÙÂÉÒÁÅÔ ÓÅËÔÏÒ ÎÁ ×ÙÂÒÁÎÎÏÊ ÄÏÒÏÖËÅ ÐÏ
; ÓÏÄÅÒÖÉÍÏÍÕ ÒÅÇÉÓÔÒÏ×ÏÊ ÐÁÒÙ BC ( ÏÂÙÞÎÏ
; ÎÏÍÅÒ ÓÅËÔÏÒÁ ÎÅ ÐÒÉ×ÙÛÁÅÔ 26D).
;
; READ - ÐÏÄÐÒÏÇÒÁÍÍÁ ÓÞÉÔÙ×ÁÅÔ ÏÄÉÎ ÓÅËÔÏÒ Ó ÄÉÓËÁ ×
; ÏÚÕ ÎÁÞÉÎÁÑ Ó ÁÄÒÅÓÁ, ÕÓÔÁÎÏ×ÌÅÎÎÏÇÏ ×
; ÐÏÓÌÅÄÎÅÊ ÏÐÅÒÁÃÉÉ SETDMA É ÚÁËÁÎÞÉ×ÁÑ
; ÜÔÉÍ ÁÄÒÅÓÏÍ + 128 ÂÁÊÔ. ðÏÄÐÒÏÇÒÁÍÍÁ
; ×ÏÚ×ÒÁÝÁÅÔ ÓÌÅÄÕÀÝÉÅ ÐÁÒÁÍÅÔÒÙ :
; A=00 - ÎÅÔ ÏÛÉÂÏË
; A>0 - ÏÛÉÂËÁ ÐÒÉ ÓÞÉÔÙ×ÁÎÉÉ
;
; WRITE - ÐÏÄÐÒÏÇÒÁÍÍÁ ÚÁÐÉÓÙ×ÁÅÔ ÏÄÉÎ ÓÅËÔÏÒ ÉÚ ÏÚÕ (Ó
; ÁÄÒÅÓÁ, ÏÐÒÅÄÅÌÅÎÎÏÇÏ × ÐÏÓÌÅÄÎÅÊ ÏÐÅÒÁÃÉÉ
; SETDMA ÐÏ ÜÔÏÔ ÁÄÒÅÓ + 128 ÂÁÊÔ) ÎÁ ÓÙÂÒÁÎÎÙÊ
; ÓÅËÔÏÒ ×ÙÂÒÁÎÎÏÊ ÄÏÒÏÖËÉ ×ÙÂÒÁÎÎÏÇÏ ÄÉÓËÁ (
; ÏÐÅÒÁÃÉÉ SETDSK,SETTRK,SETSEC). ÷ÏÚ×ÒÁÝÁÅÍÙÅ
; ÐÁÒÁÍÅÔÒÙ ÁÎÁÌÏÇÉÞÎÙ ËÏÍÁÎÄÅ READ.
;
;
RDVDISK:
CALL SEC2ADR ; HL=SECTOR_ADDRESS, A=SECTOR_BANK
LD DE,MOVEBUF
LD BC,80h
CALL MOVEADRSP ; ÷ï ÷òåíåîîùê âõæåò
LD HL,MOVEBUF
CALL @@BLDR80DEDMA ; ÷ ðïìøúï÷áôåìøóëïå DMA
TSTCSUM:LD HL,MOVEBUF
LD B,80H
XOR A
MKADR1: XOR (HL) ; ðïäóþåô ë.ó.
INC HL
DJNZ MKADR1
PUSH AF ; K.ó. óåëôïòá
LD A,(ETRACK0)
LD H,A ; SEGMENT
XOR A
LD L,A ; L=0
LD B,4
MKADR2: SLA H
RLA
DJNZ MKADR2 ; A=BANK,HL=SEGMENT_ADDRESS
PUSH AF
LD DE,2000
ADD HL,DE ; îáþáìï ëïîôò. óõíí óåëôïòï÷
LD D,0
LD A,(TRKNUM)
OR A
JR Z,MKADR4
LD B,A
LD A,(DPB_E) ; SPT (SECTORS PER TRACK)
LD E,A
MKADR3: ADD HL,DE
DJNZ MKADR3
MKADR4: LD A,(@SECNUM)
LD E,A
ADD HL,DE ; áäòåó ë.ó. óåëôïòá
POP AF ; âáîë ë.ó. óåëôïòá
PUSH AF
PUSH HL
CALL BLDB ; A=ë.ó. óåëôïòá
POP HL
POP DE ; D=âáîë ë.ó. óåëôïòá
LD A,B
POP BC ; B=K.ó. óåëôïòá
XOR B
RET ; A=0-OK, A<>0-BAD SECTOR
;
SEC2ADR:LD A,(TRKNUM)
LD E,A
LD D,0
LD HL,ETRACK0
ADD HL,DE
LD H,(HL) ; SEGMENT
LD L,D ; L=0
XOR A
LD B,4
MKADR: SLA H
RLA
DJNZ MKADR ; A=BANK,HL=SEGMENT_ADDRESS
;
PUSH AF ; ÷è. HL=áäò. óåçíåîôá
PUSH HL
LD A,(TRKNUM)
OR A
LD A,(SECNUM)
JR NZ,ADDRRR
CP 13
JR C,ADDRRR
LD A,13
ADDRRR: LD (@SECNUM),A
dec a
LD B,7
LD H,0
LD L,A
ADDDRR: ADD HL,HL
DJNZ ADDDRR
POP DE
ADD HL,DE
POP AF
RET
;
WRVDISK:
LD DE,MOVEBUF
push de
CALL @@BLDR80HLDMA ; éú ðïìøúï÷áôåìøóëïçï DMA
CALL SEC2ADR ; OUT: HL=SECTOR_ADDRESS, A=SECTOR_BANK, B=0
EX DE,HL
LD C,80h
pop hl ; LD HL, MOVEBUF
CALL MOVEADRSP ; éú ÷òåíåîîïçï âõæåòá
CALL TSTCSUM ; HL=ADDR_CSUM, B=CSUM
LD A,D ; D=BANK_CSUM
CALL BSTB
XOR A
RET
;
; IDE/SD subroutines
;
; SEARCH_FREE:
; OUT: A=0=found
; B=free ide slot index (0,1,2)
; DE=PARIDEx
;
SEARCH_FREE:
ld c, 0FFh
;
; SEARCH_SLOT:
; INP: c=hash,
; OUT: A=0=found
; B=ide slot index (0,1,2)
; DE=PARIDEx
; saves C
;
SEARCH_SLOT:
ld b, 3 ; IDE/SD slots count
SSLOT: push bc
ld c, b
CALL SEARCH_HASH1
ld a, c
pop bc
sub c
jr z, SSLOT1
djnz SSLOT
ret
SSLOT1: dec b
ret
;
; SEARCH_HASH:
; INP: B=ide slot index (0,1,2)
; OUT: C=(HL)=partition_hash (part & drv) - BORDERx[9]
; DE=PARIDEx
; saves B
;
PARIDESIZE EQU PARIDE1-PARIDE0
SEARCH_HASH:
ld c, b
inc c
SEARCH_HASH1:
ld hl, PARIDE0-PARIDESIZE ; first IDE/SD slot
ld de, PARIDESIZE
RSLOT0: add hl, de
dec c
jr nz, RSLOT0
push hl
inc hl
inc hl
ld e, (hl)
inc hl
ld d, (hl) ; de=BORDERx
ld hl, 9
add hl, de
ld c, (hl) ; c=partition hash (part_N & dev_sign)
pop de
ret
;
; INP: B=ide slot index (0,1,...)
; OUT: C=previous partition_hash (part & drv)
; DE=PARIDEx
; saves B
;
RELEASE_SLOT:
call SEARCH_HASH
ld (hl), 0FFh
ret
;
; register HDD partition (IDE or SD)
; Input: B=free ide slot index (0,1,..),
; C=partition_hash (part(D6..D5) & drv_sign)
; drv_sign=(0=IDE_MASTER, 10h=IDE_SLAVE; 1=SDC, 3=SDHC)
; DE=PARIDEx
; A'=0 - do not call sd_init, A'=1 - call sd_init for SD-cards
; Output: Z=ok, NZ=error;
;
idereg: ex af, af' ; A:=docall-sd_init
ld h, a
ex af, af'
ld a, h
and c
push bc
push de
call nz, sd_init ; if SDC or SDHC - poweron & wakeup card
pop hl ; hl=PARIDEx
ld de, xPARIDE
push de
ld bc, 8
ldir
pop hl ; hl=xPARIDE
ld a, (hl)
inc hl
ld h, (hl)
ld l, a ; hl=LBABUF
ld c,3
add hl,bc
ld (hl), 0FFh ; (LBABUF+3)=0FFh -> force reread for dirty IDEBUF
ld de, xIDEBUF
ld hl, xMInfo+3
ld (hl), e
inc hl
ld (hl), d
inc hl
ld (hl), b ; b=0
inc hl
ld (hl), b ; b=0
inc hl
ld (hl), b ; b=0
inc hl ; hl=xMInfo+8
ld (hl), b ; b=0
pop bc
ld a, c ; a=part_hash
ld (xBORDER+9), a ; select ide device & partition
and 1Fh ; a: 0=master, 10h=slave, 1=SDC, 3=SDHC
ld d, a
push bc
call x_rdide ; read MBR. hl=idebuf1+512, e:=ide_cmd_read, saves D
pop bc ; B=free ide slot index (0,1,..),
; C=partition_hash (part(D6..D5) & drv_sign)
ret nz ; if error
push de ; d=device (0=master, 10h=slave, 1=SDC, 3=SDHC)
ld hl,xIDEBUF+462 ; hl=partition_record[0][15]+1
ld a, c
rlca
rlca
rlca
and 3 ; a=partition N (0..3)
ld de, 16
idereg1:or a
jr z, idereg2
add hl, de
dec a
jr idereg1 ; hl=partition_record[0..3][15]
idereg2:ld de, xBorder+9 ; BATVAR[10..18]=[crc,parbeg,parsize,part_hash]
ld a,(de)
ld (hl),a
ld bc, 966h ; c=0/10h=xBorder[9]
idereg3:ld a, (hl)
ld (de), a ; copy lbabeg, lbasize to xBorder[1..8]
add a, c
ld c, a
dec hl
dec de
djnz idereg3
ld (de), a ; put crc of lbabeg+lbasize+drv_sign to xBorder[0]
ld de, xIDEBUF
ld (hl), d
dec hl
ld (hl), e ; zMasterInfo over MBR partition record
dec hl
dec hl
ld a, partcpm ; process only CP/M partitions
cp (hl) ; partition_record[0..3][4]
pop de ; D: 0=master, 10h=slave, 1=SDC, 3=SDHC
ret nz ; if wrong partition type
ld c, 7
add hl, bc ; hl=xMasterInfo+8
call x_rdide ; read first partition sector. hl=buf+512 saves D
ret nz ; if IO error
;
ld hl, xIDEBUF ; hl=Buffer
call DPBcrc
ld a, 66h
ret nz ; if volume has not DPB
ld hl, xIDEBUF+16 ; source DPB (readed DPB)
ld c, 15 ; count
ld de, (XPARIDE+6) ; destination DPB where copy to
LDIR ; copy DPB to work area
ld hl, xBorder ; source (readed border)
ld de, (XPARIDE+2) ; destination border
ld c, 10 ; count
ldir ; copy partition params to ide slot array
dec de
push de
call CALC_ALV
pop hl
ret z
ld (hl), 0FFh ; free slot
ret
;
DPBcrc: LD B,DPBSize
crc66: LD A,66H
idereg4:ADD A,(HL) ; calculate DPB crc
INC HL
DJNZ idereg4
CP (HL)
ret
;
; Recalculate and move all ALVs. INP: none, OUT: Z(A=0)=ok, NZ(A<>0)=failed=no_space
;
CALC_ALV:
ld de, MNTBUF ; ALV_D_buffer address = MNTBUF
ld bc, BORDER1+9
ld hl, DPB_D
call COPYALV ; return de=nextfree, bc=ALVsize
ld (ALVD_SZ), bc
push de ; ALV_X_buffer address (calculated during prev COPYALV)
ld bc, BORDER2+9
ld hl, DPB_X
call COPYALV ; return de=nextfree, bc=ALVsize
ld (ALVX_SZ), bc
push bc
ld bc, BORDER0+9
ld hl, DPB_C
ld de, (DPH_C+14) ; ALV_C address
call COPYALV ; return de=nextfree, bc=ALVsize
ld (ALVC_SZ), bc
ex de, hl ; HL=ALVD address
ld (DPH_D+14), hl ; ALV_D
ld (ALVD_AD), hl
ex de, hl ; DE=ALVD_AD
ld hl, MNTBUF
ld bc, (ALVD_SZ)
call checkalv ; DE=next ALV address
pop bc ; BC=ALVX_SZ
pop hl ; HL=ALVX_AD in temporary buffer
ret nz
ld (DPH_X+14), de
ld (ALVX_AD), de
checkalv: ; check for (de+bc<ALV_E)=(de+bc-ALV_E<0)
ld a, b
or c
ret z ; LDIR(0)=LDIR(65536)
push hl
ld hl, -ALV_E
add hl, de
add hl, bc
pop hl
jp nc, @@BLDRET ; idereg5
or d ; d<>0 (de=0Exxxh)
ret
;idereg5:LDIR ; copy block to work area (RAM page 1), set Z=0
; xor a
; ret
;
; here analyse DSM_D=*(WORD*)&buf[16+5] and set (WORD*)&DPH_D[14]=*(WORD*)&DPH_C[14]+(DSM_D>>3)+1
;
; INP: HL=DPB address, DE=destination addres, BC=BORDER+9 (0/10h=master/slave, 1/3=SDcard, 0FFh=free)
; OUT: DE=next free destination addres, BC=ALVsize, HL, AF trashed
;
COPYALV:ld a, (bc)
inc a
ld b, a
ld c, a ; bc=0 if (BORDER+9)=0FFh (free slot) or undefined otherwise
ret z
push hl
ld bc, 5
add hl, bc ; hl=DBP+5 CY=0
ld c, (hl)
inc hl
ld b, (hl) ; bc=DSM
ld a, 3
CALCAL1:rr b
rr c
dec a
or a ; CY=0
jr nz, CALCAL1 ; bc=bc/8=DSM/8 - how much bytes occuped by copied ALV
pop hl ; hl=DPB address
dec hl
ld a, (hl)
dec hl
ld l, (hl)
ld h, a ; hl=(DPH+14)=ALV address
inc bc ; add reminder byte
push bc
ldir
pop bc
ret
;
PAR_IDE:defw LBABUF0
defw border0
defw IDEBUF0
defw DPB_C
;
; sec2lba - calculate ((TRKNUM*SPT)+SECNUM)/4, put reminder to IDEBUF_OFFS,
; check partition borders and partition borders CRC
; and puts absolute LBA address to MasterInfo[5..8]
;
; Returns Z if lba_offset crc OK, NZ if crc failed.
;
sec2lba:ld hl, (PAR_IDE+2) ; hl=borders=[crc,lbabeg,lbasize,master/slave]
ld a,(hl) ; crc
ld b,9
seclba0:inc hl
sub (hl)
djnz seclba0
SUB 66h
ret nz ; return FALSE if CRC failed
ld hl, (PAR_IDE+6) ; hl = DPB
ld e, (hl)
inc hl
ld d, (hl) ; de=SPT (sectors per track)
ld bc, (TRKNUM)
call MULT32A ; DEHL=DE*BC
ld bc, (SECNUM)
dec bc
add hl, bc ;
jr nc, seclba1
inc de ; DEHL=(TRKNUM*SPT)+SECNUM
seclba1:xor a ; CY:=0
rr d
rr e
rr h
rr l ; DEHL/2
rr a ; keep reminder (CY->A7, A0=0->CY)
rr d
rr e
rr h
rr l ; DEHL/2, CY=reminder bit. DEHL=lba (d-high, l-low)
rla ; keep reminder (CY->A0, A7->CY)
rla ; (A0->A1, CY->A0) CY=A7=0
ld (IDEBUF_OFFS),a ; a=reminder=128b-offset in 512b-block (0..3)
ld (MasterInfo+5), hl
ld (MasterInfo+7), de ; lba ÏÔÎÏÓÉÔÅÌØÎÙÊ
ld hl, (PAR_IDE+4) ; hl=IDEBUF
ld (MasterInfo+3), hl ; destination address
ld hl, (PAR_IDE+2) ; hl=borders=[crc,lbabeg,lbasize,master/slave]
ld de, 8
add hl,de
ld b,4
ld de, MasterInfo+8 ; check partition upper border
copy2: ld a,(de)
cp (hl)
jr c, copyok ; MasterInfo[5..8] (partition zero-based LBA)
jr nz,copyerr ; STRICTLY LESS [1:EFFB..EFFE] (partition size)
dec de
dec hl
djnz copy2
copyerr:xor a
dec a
ret
;
copyok: ld hl, (PAR_IDE+2) ; hl=borders=[crc,lbabeg,lbasize,master/slave]
inc hl
ld de, MasterInfo+5
ld b, 4 ; add 4 bytes of partition offset
xor a ; cy=0
copy1: ld a, (de)
adc a, (hl) ; add partition offset (1:EFFB..EFFE)
ld (de), a ; to LBA=MasterInfo[5..8] -> absolute LBA
inc hl
inc de
djnz copy1
xor a
ret
;
; Inp: none
; Out: d: 0=Master, 10h=slave, 1=SDC, 3=SDHC, 0FFh=unused
; hl=IDEDEVx
;
IDEDEVICE:
ld hl, (PAR_IDE+2) ; hl=borders=[crc,lbabeg,lbasize,master/slave]
IDEDEVHL:
ld de, 9
add hl, de
ld d, (hl) ; d: 0=Master, 10h=slave, 1=SDC, 3=SDHC, 0FFh=unused
ld hl, (PAR_IDE) ; hl=LBABUF
dec hl ; hl=IDEDEVx
ret
;
; óÒÁ×ÎÉ×ÁÅÔ ÔÅËÕÝÉÊ ÎÏÍÅÒ LBA × MasterInfo[5..8]
; Ó ÎÏÍÅÒÏÍ ÂÕÆÅÒÉÚÉÒÏ×ÁÎÎÏÇÏ ÓÅËÔÏÒÁ LBABUF[0..3]
; ÷ÏÚ×ÒÁÝÁÅÔ Z ÅÓÌÉ ÞÉÓÌÁ ÒÁ×ÎÙ, ÉÎÁÞÅ - NZ
; ÐÏÒÔÉÔ ×ÓÅ ÒÅÇÉÓÔÒÙ
;
cmp_lba:call IDEDEVICE ; d=0/10h, hl=IDEDEVx
ld a, d
cp (hl)
ret nz ; if idedevice changed
ld de, MasterInfo+4
ld b, 4
cmplba1:inc de
inc hl
ld a, (de)
cp (hl)
ret nz
djnz cmplba1
ret
;
; ===================== COMMON DISK SUBROUTINES ======================
;
SELTRK: LD (TRKNUM),BC
RET
SELSEC: LD (SECNUM),BC
RET
;
SELIDE: push hl
dec hl
ld de, PAR_IDE+7
ld bc, 8
lddr
pop hl
ret
;
SELDISK:call ZDI ; trashes HL reg
LD A,C
LD (WORKDISK),A
ld DE, DPH_A ; Device0 = FLOPPY 0
or a
jr z, SELFLOPPY
ld DE, DPH_B ; Device1 = FLOPPY 1
dec a
jr z, SELFLOPPY
LD HL,DPH_E ; Device2 = VDISK (RAMDISK)
dec a
RET Z
ld hl, DPH_C ; Device3 = IDE/SD slot 0
dec a
jr z, SELIDE
ld hl, DPH_D ; Device3 = IDE/SD slot 1
dec a
jr z, SELIDE
ld hl, DPH_X ; Device3 = IDE/SD slot 3
dec a
jr z, SELIDE
dec a
JR nz, toilleg
;
; ROMdisk kernale
;
SELROM: JP xSELROM
GETROM: JP xGETROM
;
xSELROM:LD A,090H ; x* = Orion-128 type ROMDISK
LD (ROM_PPA+3),A ; init ROM-DISK PPA
;
ySELROM:xor a ; y* = Orion-PRO type ROMDISK
ld h,a
ld l,a ; disk offset = 0
inc a ; a=1
ld de, MNTBUF ; COMMON SELROM PART
push de
call GETROM ; get BOOT-sector
pop hl
call DPBcrc ; b=0
toilleg:JR nz, ILLEGDISK
ld hl, DPH_R ; Device6 = ROMDISK
push hl
ld c, 10 ; bc,10
add hl, bc
ld e, (hl)
inc hl
ld d, (hl) ; de=DPB_R
ld hl, MNTBUF+10h
ld a, (hl)
ld (ROM_SPT), a
ld c,15
ldir ; get ROMDISK DPB
pop hl
xor a
ret
;
SELFLOPPY:
; call YDI ; trashes A, HL reg
ex de,hl
PUSH HL ; ÷ HL ÁÄÒÅÓ DPH ÄÉÓËÁ
LD BC,10
ADD HL,BC ; ÷ HL ÁÄÒÅÓ ÕËÁÚÁÔÅÌÑ ÎÁ DPB ÄÉÓËÁ
LD A,(HL)
INC HL
LD H,(HL)
LD L,A
DEC HL
LD A,(HL) ; òÅÇ. á = (DPB-1)
DEC HL
LD (DE577),HL ; DE577 - ÁÄÒÅÓ DPB-2
INC A
DI ; 20120418
CALL NZ,GETDPB
POP HL
RET Z
; ÷ÙÈÏÄ ÐÒÉ ÎÅÓÕÝÅÓÔ×ÕÀÝÅÍ ÄÉÓËÅ: HL = 0
; É ÑÞÅÊËÁ ÐÏ ÁÄÒÅÓÕ 4 ÕÓÔÁÎÏ×ÌÉ×ÁÅÔÓÑ × 0
ILLEGDISK:
LD HL,ACTDSK
LD B, DEFAULT_DISK
CALL BSTB2 ; set A to TPAPAGE
XOR A
LD H,A
LD L,A
RET
;
; óþéôù÷áåô âìïë ðáòáíåôòï÷ äéóëá éú ÷ïïô-óåëôïòá
; ÷èïä: HL=(áäòåó òáúíåýåîéñ DPB ÷ ðáíñôé)-2
; ÷ïú÷òáýáåô á=0 Z=TRUE åóìé ïë é A=1 Z=FALSE éîáþå
;
GETDPB: PUSH HL
CALL ADF3E
POP HL
LD (DE577),HL
PUSH HL
LD A,(HL)
LD (DE579),A
XOR A
LD (DE57A),A
INC A
LD (DE57B),A
LD HL,DE577
CALL ADFB5
CALL READBOOT ; ZERO FLAG: Z-OK NZ-BADSEC
CALL NZ,READBOOT
JR NZ,ADED8 ; ðåòåèïä åóìé ïðñôø ïâìïí
ADEBC: LD A,(DE579)
LD (DE580),A
XOR A
LD (DE581),A
INC A
LD (DE582),A
LD HL,DISKBUF ; ðòï÷åòëá îáìéþéñ âìïëá
call DPBcrc
JR Z,ADEDD
ADED8: POP DE ; âáììáîó óôåëá
LD A,1
OR A ; á=1, Z=FALSE -> îá äéóëå
RET ; îåô BOOT-SEKTORA
;
ADEDD: POP HL ; ðåòåëáðù÷áåô BOOT-óåëôïò
PUSH HL
LD A,(RG_F720)
OR 10H
LD (HL),A
INC HL
LD (HL),0FFH
INC HL
LD DE,DISKBUF+16
LD BC,0FH
EX DE,HL
LDIR ; ðåòåóìáìé DPB
POP DE
XOR A
DEC DE
LD (DE),A
DEC DE
LD HL,DISKBUF+10
LD A,(HL)
LD (DE),A
DEC DE
INC HL
LD A,(HL)
LD (DE),A
LD C,A
INC C
LD A,80H
ADF04: RLCA
DEC C
JR NZ,ADF04
LD (DE583),A
DEC DE
INC HL
LD A,(HL)
LD (DE),A
DEC DE
DEC DE
INC HL
INC HL
LD A,(HL)
LD (DE),A
DEC DE
LD (DE),A
XOR A
RET
;
ADF3E: LD A,(DE56E)
OR A
RET Z
XOR A
LD (DE56E),A
LD HL,(DE57E)
LD (DE577),HL
LD HL,(DE581)
LD (DE57C),HL
CALL AE030
LD A,0
LD (DE576),A
LD HL,DISKBUF
LD (DE570),HL
ADF64: LD HL,DE577
CALL ADFB5
ADF6A: LD HL,(DE570)
CALL AE0C0
EX DE,HL
LD (DE570),HL
LD HL,DE576
LD A,(DE573)
ADD A,(HL)
LD (HL),A
LD A,(DE583)
CP (HL)
RET Z
RET M
LD A,(DE571)
CP 0F7H
JP NC, RES0FF
; JR C,ADF8F
; LD A,0FFH
; LD (RESULT),A
; RET
;
ADF8F: LD HL,DE57B
LD A,(HL)
INC (HL)
LD HL,(DE577)
LD DE,0FFFCH
ADD HL,DE
CP (HL)
JR NC,ADFA4
INC A
LD (YF702),A
JR ADF6A
;
ADFA4: LD A,(DE57C)
INC A
LD (DE57C),A
LD A,1
LD (DE57D),A
CALL AE030
JR ADF64
;
ADFB5: LD E,(HL)
INC HL
LD D,(HL)
INC HL
CALL NOWGINT
LD A,(HL)
OR 20H
LD (YF720),A
AND 0DFH ; íéçîõìé âéôïí D5 -
LD (RG_F720),A ; úáðõóë íïôïòá îá
LD (YF720),A ; äïéóôïòéþåóëéè ëîçíä
DEC DE
INC HL
LD A,(HL)
OR A
LD C,A
INC HL
LD A,(HL)
LD (YF702),A ; õóôáîï÷ëá óåëôïòá
JR Z,AE006
LD A,(DE)
LD (YF701),A ; õóôáîï÷ëá äïòïöëé
PUSH AF
PUSH DE
LD B,0
LD HL,0FFFAH
ADD HL,DE
LD A,(HL)
INC HL
CP 50H
JR C,ADFF4
CP (HL)
JR Z,ADFF4
LD B,0FFH
LD A,C
OR A
RLA
LD C,A
ADFF4: POP DE
POP AF
CP C
JR NZ,ADFFE
LD A,B
OR A
JR NZ,AE027
RET
;
ADFFE: LD A,C
LD (YF703),A
LD C,18H
JR NZ,AE009
AE006: LD A,C
LD C,8
AE009: LD (DE),A
DEC DE
DEC DE
DEC DE
DEC DE
LD A,(DE)
AND 3
OR C
CALL CMDBUSY
LD B,0FH
AE15E: CALL AE16C
DEC B
JR NZ,AE15E ; úáäåòöëá
CALL NOWGINT ; ôéð ðòåòù÷áîéê ïô ëîçíä
DEC DE
DEC DE
LD A,(DE)
CP 50H
RET C
INC DE
EX DE,HL
CP (HL)
RET Z
AE027: LD A,(YF701) ; úíõìñãéñ 40-äïòïöåþîïçï
OR A ; äéóëï÷ïäá : îïíåò äïòïöëé
RRA ; äåìéôóñ îá 2
LD (YF701),A
RET
;
AE030: LD HL,(DE577)
LD A,(HL)
LD (DE579),A
DEC HL
DEC HL
LD B,(HL)
LD C,0FFH
LD A,(DE57D)
DEC A
INC B
LD D,A
LD E,A
AE043: DEC B
JR Z,AE04F
OR A
LD A,E
RRA
LD E,A
LD A,C
ADD A,A
LD C,A
JR AE043
;
AE04F: LD A,C
AND D
INC A
LD (DE572),A
LD A,C
CPL
INC A
LD (DE573),A
DEC HL
LD D,(HL)
OR A
DEC D
LD A,(DE57C)
JR NZ,AE065
RRA
AE065: LD (DE57A),A
CALL C,AE07D
DEC D
JR NZ,AE077
DEC HL
LD A,E
SUB (HL)
JR C,AE077
LD E,A
CALL AE07D
AE077: LD A,E
INC A
LD (DE57B),A
RET
;
AE07D: LD A,(DE579)
AND 0EFH
LD (DE579),A
RET
;
READBOOT:
CALL NOWGINT
LD HL,DISKBUF
; LD A,2 ; îå âïìåå 2-è
; CALL AE088 ; ðïðùôïë þôåîéñ
call rdtwice
RET Z
LD A,(RG_F720) ; åóìé îåõäáþîï, ôï ðòï-
XOR 8 ; éî÷åòôéòï÷áôø âéô HD
LD (RG_F720),A
LD (YF720),A
LD HL,DISKBUF
RDTWICE:LD A,2 ; óîï÷á îå âïìåå 2-è
; ðïðùôïë þôåîéñ
AE088: DEFB 0DDH
LD L,A ; LD IXL,A
CALL READWG
RET Z
DEFB 0DDH
LD A,L ; LD A,IXL
DEC A
JR NZ,AE088
DEC A
RET
;
; þôåîéå æéúéþåóëïçï óåëôïòá ÷ (HL)..(HL+1023)
;
READWG: CALL START ; úáðõóë íïôïòá
RET NZ
;
; úäåóø ÷ïôëîõôø úáôùþëõ ðòåòù÷áîéê
;
PUSH HL
PUSH HL ; I
LD HL,TE0B5 ; ôïþëá ÷ùèïäá
EX (SP),HL ; PUSH HL
LD A,80H ; þôåîéå óåëôïòá
CALL WG_CMD
LD DE,YF700
LD BC,YF703
AE0AA: LD A,(DE)
RRA
RET NC ; ëîçíä ó÷ïâïäåî åóìé ëïîåã óåëôïòá
RRA
JR NC,AE0AA ; åóìé äáîîùå îå çïôï÷ù
LD A,(BC)
LD (HL),A
INC HL
JR AE0AA
;
TE0B5: EX DE,HL
AE0B6: POP HL ; HL = îáþáìï óåëôïòá ÷ ïúõ
LD A,(YF700)
AND 0DDH
; LD (RESULT),A ; òåúõìøôáô ïðåòáãéé (0=OK)
;
; úäåóø òáúòåûáôø ðòåòù÷áîéñ
;
; RET
jr RESRET
;
AE0C0: CALL START
RET NZ
;
; úäåóø ÷ïôëîõôø úáôùþëõ ðòåòù÷áîéê
;
LD A,0A0H
CALL WG_CMD ; úáðéóáôø óåëôïò
PUSH HL
LD (STACKTMP),SP
LD SP,HL
LD HL,YF703
LD DE,YF700
AE0DD: POP BC
AE0DE: LD A,(DE)
XOR 1
JR Z,AE0DE
LD (HL),C
RRA
JR C,AE0F2
RRA
JR NC,AE0DE