mirror of https://github.com/wwarthen/RomWBW.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
536 lines
13 KiB
536 lines
13 KiB
|
|
maclib ldropts.lib
|
|
|
|
maclib cpm3.lib
|
|
|
|
cseg
|
|
|
|
; BIOS Jump vector.
|
|
|
|
; All BIOS routines are invoked by calling these
|
|
; entry points.
|
|
|
|
?boot: jp boot ; initial entry on cold start
|
|
?wboot: jp wboot ; reentry on program exit, warm start
|
|
|
|
?const: jp const ; return console input status
|
|
?conin: jp conin ; return console input character
|
|
?cono: jp conout ; send console output character
|
|
?list: jp list ; send list output character
|
|
?auxo: jp auxout ; send auxilliary output character
|
|
?auxi: jp auxin ; return auxilliary input character
|
|
|
|
?home: jp home ; set disks to logical home
|
|
?sldsk: jp seldsk ; select disk drive, return disk parameter info
|
|
?sttrk: jp settrk ; set disk track
|
|
?stsec: jp setsec ; set disk sector
|
|
?stdma: jp setdma ; set disk I/O memory address
|
|
?read: jp read ; read physical block(s)
|
|
?write: jp write ; write physical block(s)
|
|
|
|
?lists: jp listst ; return list device status
|
|
?sctrn: jp sectrn ; translate logical to physical sector
|
|
|
|
?conos: jp conost ; return console output status
|
|
?auxis: jp auxist ; return aux input status
|
|
?auxos: jp auxost ; return aux output status
|
|
?dvtbl: jp devtbl ; return address of device def table
|
|
?devin: jp devini ; change baud rate of device
|
|
|
|
?drtbl: jp drvtbl ; return address of disk drive table
|
|
?mltio: jp multio ; set multiple record count for disk I/O
|
|
?flush: jp flush ; flush BIOS maintained disk caching
|
|
|
|
?mov: jp move ; block move memory to memory
|
|
?tim: jp time ; Signal Time and Date operation
|
|
?bnksl: jp selmem ; select bank for code execution and default DMA
|
|
?stbnk: jp setbnk ; select different bank for disk I/O DMA operations.
|
|
?xmov: jp xmove ; set source and destination banks for one operation
|
|
|
|
jp 0 ; reserved for future expansion
|
|
jp 0 ; reserved for future expansion
|
|
jp 0 ; reserved for future expansion
|
|
|
|
boot:
|
|
|
|
if cmdline
|
|
|
|
ld (stksav),sp
|
|
ld sp,stack
|
|
|
|
boot1:
|
|
ld de,msgunit
|
|
call writestr
|
|
call cin
|
|
push af
|
|
call cout
|
|
pop af
|
|
|
|
sub '0'
|
|
ld (unit),a
|
|
jr c,selerr
|
|
|
|
ld bc,0F810h ; HBIOS, get disk unit count
|
|
call 0FFF0h ; do it, E := disk unit count
|
|
ld a,(unit) ; get unit num back
|
|
cp e ; compare to entry
|
|
jr nc,selerr ; loop if too high
|
|
|
|
ld de,msgslc
|
|
call writestr
|
|
call cin
|
|
push af
|
|
call cout
|
|
pop af
|
|
|
|
sub '0'
|
|
ld (slice),a
|
|
jr c,selerr
|
|
cp 10
|
|
jr nc,selerr
|
|
|
|
jr boot2
|
|
|
|
selerr:
|
|
ld de,msginv
|
|
call writestr
|
|
jr boot1
|
|
|
|
boot2:
|
|
ld de,crlf
|
|
call writestr
|
|
|
|
ld sp,(stksav)
|
|
|
|
ld bc,0F9E0h ; HBIOS func: set boot info
|
|
ld a,(unit) ; get unit
|
|
ld d,a ; put in D
|
|
ld a,(slice) ; get slice
|
|
ld e,a ; put in E
|
|
ld l,0 ; Bank is always zero
|
|
call 0FFF0h ; do it
|
|
|
|
else
|
|
|
|
ld bc,0F8E0h ; HBIOS func: get boot info
|
|
call 0FFF0h ; do it, D := boot unit, E: := slice
|
|
ld a,d ; move unit to A
|
|
ld (unit),a ; save it
|
|
ld a,e ; move slice to A
|
|
ld (slice),a ; save it
|
|
|
|
endif
|
|
|
|
ld a,(unit) ; Get boot unit
|
|
ld c,a ; put in C
|
|
ld b,18h ; HBIOS Media function
|
|
ld e,1 ; Enable media check/discovery
|
|
call 0FFF0H ; HBIOS call
|
|
ld a,e ; Resultant media id to accum
|
|
or a ; Set flags
|
|
;halt
|
|
;
|
|
; !!! Need to do something on error !!!
|
|
;
|
|
ret z ; Bail out on error
|
|
|
|
ld hl,dpb$start - dpb$sz
|
|
ld de,dpb$sz
|
|
ld b,a ; loop count
|
|
dsk$login1:
|
|
add hl,de ; next dpb
|
|
djnz dsk$login1 ; loop as needed
|
|
|
|
; hl is ptr to desired dpb
|
|
ld de,dph0 ; load DPH pointer
|
|
ex de,hl ; de = DPB adr, hl = DPH adr
|
|
push de ; save DPB adr
|
|
ld de,12 ; offset of DPB in DPH
|
|
add hl,de ; hl = adr of DPB field in DPH
|
|
pop de ; recover DPB adr
|
|
ld (hl),e ; update LSB
|
|
inc hl
|
|
ld (hl),d ; udpate MSB
|
|
|
|
ret
|
|
|
|
wboot:
|
|
ld a,81H
|
|
halt
|
|
|
|
const:
|
|
ld a,82H
|
|
halt
|
|
conin:
|
|
ld bc,0080H ; unit 80h (console), func 0 = CIN
|
|
call 0FFF0H
|
|
|
|
conout:
|
|
ld e,c ; output character in E
|
|
ld bc,0180H ; unit 80h (console), func 1 = COUT
|
|
;rst 08 ; do it
|
|
call 0FFF0H
|
|
ret ; return
|
|
list:
|
|
ld a,85H
|
|
halt
|
|
auxout:
|
|
ld a,86H
|
|
halt
|
|
auxin:
|
|
ld a,87H
|
|
halt
|
|
|
|
home:
|
|
ld hl,0
|
|
ld (trk),hl
|
|
ret
|
|
seldsk:
|
|
ld hl,dph0
|
|
ret
|
|
settrk:
|
|
ld (trk),bc
|
|
ret
|
|
setsec:
|
|
ld (sect),bc
|
|
ret
|
|
setdma:
|
|
ld (dma),bc
|
|
ret
|
|
read:
|
|
ld a,(unit) ; get unit
|
|
ld c,a ; BIOS Disk Unit in C
|
|
ld b,12H ; HBIOS SEEK function
|
|
push bc ; save it
|
|
;push de ; save XDPH pointer
|
|
ld b,17h ; HBIOS DEVICE function
|
|
rst 08 ; Do it, D=device type
|
|
ld a,d ; put in accum
|
|
and 0F0h ; isolate high bits
|
|
ld b,1 ; assume it is floppy, 1 head bit
|
|
ld c,01h ; 1 bit head mask
|
|
cp 10h ; floppy?
|
|
jr z,seek0 ; yup, skip ahead
|
|
ld b,4 ; must be hard disk, 4 head bits
|
|
ld c,0Fh ; 4 bit head mask
|
|
seek0:
|
|
;pop de ; recover XDPH pointer
|
|
push bc ; save bc
|
|
ld a,(slice) ; get slice
|
|
ld e,a ; slice to E
|
|
ld h,65 ; number of tracks per slice
|
|
call mult8 ; HL now has track offset for slice
|
|
pop bc ; recover bc
|
|
push hl ; save track offset for now
|
|
ld hl,(trk) ; get track value
|
|
ld a,l ; lsb of track to a
|
|
and c ; apply mask
|
|
ld d,a ; save in d
|
|
seek1:
|
|
srl h ; shift one bit out
|
|
rr l ; ... of hl
|
|
djnz seek1 ; do all bits
|
|
ld a,(sect) ; get sector
|
|
ld e,a ; stuff it in e
|
|
ex de,hl ; de=track, hl=head/sect
|
|
ex (sp),hl ; save head/sect, hl = offset
|
|
add hl,de ; hl has final track value
|
|
pop de ; recover head/sect to de
|
|
pop bc ; recover function & unit
|
|
;rst 08 ; perform seek
|
|
call 0FFF0H
|
|
|
|
; Read Sector
|
|
ld b,13h ; HBIOS read
|
|
ld a,(unit) ; get boot unit
|
|
ld c,a ; put in C
|
|
ld hl,(dma) ; dma address
|
|
ld a,(0FFE0H) ; current bank
|
|
ld d,a ; ... to D
|
|
ld e,1 ; 1 sector
|
|
;rst 08
|
|
call 0FFF0H
|
|
|
|
ret
|
|
write:
|
|
ld a,8EH
|
|
halt
|
|
|
|
listst:
|
|
ld a,8FH
|
|
halt
|
|
sectrn:
|
|
ld h,b
|
|
ld l,c
|
|
ret
|
|
|
|
conost:
|
|
ld a,91H
|
|
halt
|
|
auxist:
|
|
ld a,92H
|
|
halt
|
|
auxost:
|
|
ld a,93H
|
|
halt
|
|
devtbl:
|
|
ld a,94H
|
|
halt
|
|
devini:
|
|
ld a,95H
|
|
halt
|
|
|
|
drvtbl:
|
|
ld a,96H
|
|
halt
|
|
multio:
|
|
ld a,97H
|
|
halt
|
|
flush:
|
|
ld a,98H
|
|
halt
|
|
|
|
move:
|
|
ex de,hl ; we are passed source in DE and dest in HL
|
|
ldir ; use Z80 block move instruction
|
|
ex de,hl ; need next addresses in same regs
|
|
ret
|
|
time:
|
|
ld a,9AH
|
|
halt
|
|
selmem:
|
|
ld a,9BH
|
|
halt
|
|
setbnk:
|
|
ld a,9CH
|
|
halt
|
|
xmove:
|
|
ld a,9DH
|
|
halt
|
|
|
|
cin:
|
|
; input character from console via hbios
|
|
ld c,080H ; console unit to c
|
|
ld b,00H ; hbios func: input char
|
|
call 0FFF0H ; hbios reads character
|
|
ld a,e ; move character to a for return
|
|
ret
|
|
|
|
cout:
|
|
; output character to console via hbios
|
|
ld e,a ; output char to e
|
|
ld c,080H ; console unit to c
|
|
ld b,01H ; hbios func: output char
|
|
call 0FFF0H ; hbios outputs character
|
|
ret
|
|
|
|
writestr:
|
|
push af
|
|
writestr1:
|
|
ld a,(de)
|
|
cp '$' ; test for string terminator
|
|
jp z,writestr2
|
|
push de
|
|
call cout
|
|
pop de
|
|
inc de
|
|
jp writestr1
|
|
writestr2:
|
|
pop af
|
|
ret
|
|
|
|
;
|
|
; multiply 8-bit values
|
|
; in: multiply h by e
|
|
; out: hl = result, e = 0, b = 0
|
|
;
|
|
mult8:
|
|
ld d,0
|
|
ld l,d
|
|
ld b,8
|
|
mult8_loop:
|
|
add hl,hl
|
|
jr nc,mult8_noadd
|
|
add hl,de
|
|
mult8_noadd:
|
|
djnz mult8_loop
|
|
ret
|
|
|
|
msgunit db 13,10,13,10,'Boot CP/M 3 from Disk Unit: $'
|
|
msgslc db ' Slice: $'
|
|
msginv db 13,10,13,10,'*** Invalid Selection ***$'
|
|
crlf db 13,10,'$'
|
|
|
|
dpb$start:
|
|
dpb$rom: ; 384K ROM Drive
|
|
dw 64 ; spt: sectors per track
|
|
db 4 ; bsh: block shift factor
|
|
db 15 ; blm: block mask
|
|
db 1 ; exm: extent mask
|
|
dw 192 - 1 ; dsm: total storage in blocks - 1 = (384kb / 2k bls) - 1 = 191
|
|
dw 256 - 1 ; drm: dir entries - 1 = 256 - 1 = 255
|
|
db 11110000b ; al0: dir blk bit map, first byte
|
|
db 00000000b ; al1: dir blk bit map, second byte
|
|
dw 8000h ; cks: directory check vector size - permanent storage = 8000H
|
|
dw 0 ; off: reserved tracks = 16 trks * (16 trks * 16 heads * 16 secs * 512 bytes) = 128k
|
|
db 2 ; psh: 2 for 512 byte sectors
|
|
db 3 ; phm: (512 / 128) - 1
|
|
dpb$sz equ $ - dpb$start
|
|
|
|
dpb$ram: ; 256K RAM Drive
|
|
dw 64 ; spt: sectors per track
|
|
db 4 ; bsh: block shift factor
|
|
db 15 ; blm: block mask
|
|
db 1 ; exm: extent mask
|
|
dw 128 - 1 ; dsm: total storage in blocks - 1 = (256kb / 2k bls) - 1 = 127
|
|
dw 256 - 1 ; drm: dir entries - 1 = 256 - 1 = 255
|
|
db 11110000b ; al0: dir blk bit map, first byte
|
|
db 00000000b ; al1: dir blk bit map, second byte
|
|
dw 8000h ; cks: directory check vector size - permanent storage = 8000H
|
|
dw 0 ; off: reserved tracks = 16 trks * (16 trks * 16 heads * 16 secs * 512 bytes) = 128k
|
|
db 2 ; psh: 2 for 512 byte sectors
|
|
db 3 ; phm: (512 / 128) - 1
|
|
|
|
dpb$rf: ; 4MB RAM Floppy Drive
|
|
dw 64 ; spt: sectors per track
|
|
db 4 ; bsh: block shift factor
|
|
db 15 ; blm: block mask
|
|
db 0 ; exm: extent mask
|
|
dw 2047 ; dsm: total storage in blocks - 1 = (4mb / 2k bls) - 1 = 2047
|
|
dw 255 ; drm: dir entries - 1 = 256 - 1 = 255
|
|
db 11110000b ; al0: dir blk bit map, first byte
|
|
db 00000000b ; al1: dir blk bit map, second byte
|
|
dw 8000h ; cks: directory check vector size - permanent storage = 8000H
|
|
dw 0 ; off: reserved tracks = 0 trks
|
|
db 2 ; psh: 2 for 512 byte sectors
|
|
db 3 ; phm: (512 / 128) - 1
|
|
|
|
dpb$hd: ; 8MB Hard Disk Drive
|
|
dw 64 ; spt: sectors per track
|
|
db 5 ; bsh: block shift factor
|
|
db 31 ; blm: block mask
|
|
db 1 ; exm: extent mask
|
|
dw 2047 ; dsm: total storage in blocks - 1 = (8mb / 4k bls) - 1 = 2047
|
|
dw 511 ; drm: dir entries - 1 = 512 - 1 = 511
|
|
db 11110000b ; al0: dir blk bit map, first byte
|
|
db 00000000b ; al1: dir blk bit map, second byte
|
|
dw 8000h ; cks: directory check vector size - permanent storage = 8000H
|
|
dw 16 ; off: reserved tracks = 16 trks * (16 trks * 16 heads * 16 secs * 512 bytes) = 128k
|
|
db 2 ; psh: 2 for 512 byte sectors
|
|
db 3 ; phm: (512 / 128) - 1
|
|
|
|
dpb$fd720: ; 3.5" DS/DD Floppy Drive (720K)
|
|
dw 36 ; spt: sectors per track
|
|
db 4 ; bsh: block shift factor
|
|
db 15 ; blm: block mask
|
|
db 0 ; exm: extent mask
|
|
dw 350 ; dsm: total storage in blocks - 1 blk = ((720k - 18k off) / 2k bls) - 1 = 350
|
|
dw 127 ; drm: dir entries - 1 = 128 - 1 = 127
|
|
db 11000000b ; al0: dir blk bit map, first byte
|
|
db 00000000b ; al1: dir blk bit map, second byte
|
|
dw 32 ; cks: directory check vector size = 128 / 4
|
|
dw 4 ; off: reserved tracks = 4 trks * (512 b/sec * 36 sec/trk) = 18k
|
|
db 2 ; psh: 2 for 512 byte sectors
|
|
db 3 ; phm: (512 / 128) - 1
|
|
|
|
dpb_fd144: ; 3.5" DS/HD Floppy Drive (1.44M)
|
|
dw 72 ; spt: sectors per track
|
|
db 4 ; bsh: block shift factor
|
|
db 15 ; blm: block mask
|
|
db 0 ; exm: extent mask
|
|
dw 710 ; dsm: total storage in blocks - 1 blk = ((1,440k - 18k off) / 2k bls) - 1 = 710
|
|
dw 255 ; drm: dir entries - 1 = 256 - 1 = 255
|
|
db 11110000b ; al0: dir blk bit map, first byte
|
|
db 00000000b ; al1: dir blk bit map, second byte
|
|
dw 64 ; cks: directory check vector size = 256 / 4
|
|
dw 2 ; off: reserved tracks = 2 trks * (512 b/sec * 72 sec/trk) = 18k
|
|
db 2 ; psh: 2 for 512 byte sectors
|
|
db 3 ; phm: (512 / 128) - 1
|
|
|
|
dpb_fd360: ; 5.25" DS/DD Floppy Drive (360K)
|
|
dw 36 ; spt: sectors per track
|
|
db 4 ; bsh: block shift factor
|
|
db 15 ; blm: block mask
|
|
db 1 ; exm: extent mask
|
|
dw 170 ; dsm: total storage in blocks - 1 blk = ((360k - 18k off) / 2k bls) - 1 = 170
|
|
dw 127 ; drm: dir entries - 1 = 128 - 1 = 127
|
|
db 11110000b ; al0: dir blk bit map, first byte
|
|
db 00000000b ; al1: dir blk bit map, second byte
|
|
dw 32 ; cks: directory check vector size = 128 / 4
|
|
dw 4 ; off: reserved tracks = 4 trks * (512 b/sec * 36 sec/trk) = 18k
|
|
db 2 ; psh: 2 for 512 byte sectors
|
|
db 3 ; phm: (512 / 128) - 1
|
|
|
|
dpb_fd120: ; 5.25" DS/HD Floppy Drive (1.2M)
|
|
dw 60 ; spt: sectors per track
|
|
db 4 ; bsh: block shift factor
|
|
db 15 ; blm: block mask
|
|
db 0 ; exm: extent mask
|
|
dw 591 ; dsm: total storage in blocks - 1 blk = ((1,200k - 15k off) / 2k bls) - 1 = 591
|
|
dw 255 ; drm: dir entries - 1 = 256 - 1 = 255
|
|
db 11110000b ; al0: dir blk bit map, first byte
|
|
db 00000000b ; al1: dir blk bit map, second byte
|
|
dw 64 ; cks: directory check vector size = 256 / 4
|
|
dw 2 ; off: reserved tracks = 2 trks * (512 b/sec * 60 sec/trk) = 15k
|
|
db 2 ; psh: 2 for 512 byte sectors
|
|
db 3 ; phm: (512 / 128) - 1
|
|
|
|
dpb_fd111: ; 8" DS/DD Floppy Drive (1.11M)
|
|
dw 60 ; spt: sectors per track
|
|
db 4 ; bsh: block shift factor
|
|
db 15 ; blm: block mask
|
|
db 0 ; exm: extent mask
|
|
dw 569 ; dsm: total storage in blocks - 1 blk = ((1,155k - 15k off) / 2k bls) - 1 = 569
|
|
dw 255 ; drm: dir entries - 1 = 256 - 1 = 255
|
|
db 11110000b ; al0: dir blk bit map, first byte
|
|
db 00000000b ; al1: dir blk bit map, second byte
|
|
dw 64 ; cks: directory check vector size = 256 / 4
|
|
dw 2 ; off: reserved tracks = 2 trks * (512 b/sec * 60 sec/trk) = 15k
|
|
db 2 ; psh: 2 for 512 byte sectors
|
|
db 3 ; phm: (512 / 128) - 1
|
|
|
|
dph0: dw 0 ; xlt, 0 means no translation
|
|
db 0,0,0,0,0,0,0,0,0 ; scratch (9 bytes)
|
|
db 0 ; mf: media flag
|
|
dw dpb$hd ; dpb
|
|
dw csvbuf ; csv:
|
|
dw alvbuf ; alv:
|
|
dw dirbcb ; dirbcb
|
|
dw dtabcb ; dtabcb
|
|
dw 0ffffh ; hash (disabled)
|
|
db 0 ; hbank
|
|
|
|
dtbl: dtbl dph0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
|
|
|
|
dirbcb: db 0ffh ; drv
|
|
db 0,0,0 ; rec#
|
|
db 0 ; wflg
|
|
db 0 ; scratch
|
|
dw 0 ; track
|
|
dw 0 ; sector
|
|
dw dirbuf ; buffad
|
|
|
|
dtabcb: db 0ffh ; drv
|
|
db 0,0,0 ; rec#
|
|
db 0 ; wflg
|
|
db 0 ; scratch
|
|
dw 0 ; track
|
|
dw 0 ; sector
|
|
dw dtabuf ; buffad
|
|
|
|
unit ds 1 ; HBIOS unit number
|
|
slice ds 1 ; HBIOS slice number
|
|
trk ds 2 ; current track
|
|
sect ds 2 ; current sector
|
|
dma ds 2 ; current DMA address
|
|
|
|
csvbuf ds 128 ; length (CSV) = ((DRM+1)/4)
|
|
alvbuf ds 512 ; length (ALV) = ((DSM+1)/4)
|
|
dirbuf ds 512 ; sector buffer
|
|
dtabuf ds 512 ; sector buffer
|
|
|
|
ds 64
|
|
stack equ $
|
|
stksav dw 0
|
|
|
|
end
|
|
|