mirror of https://github.com/A2osX/A2osX.git
623 lines
14 KiB
Plaintext
623 lines
14 KiB
Plaintext
PR#3
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PREFIX /DATA/A2OSX
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NEW
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INC 1
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AUTO 6
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.LIST OFF
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.OP 65C02
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*--------------------------------------
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RWBankSelect .EQ $C073
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*--------------------------------------
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A2osX.RamWorks >LDAXI MSG.RW
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jsr PrintCStrAX
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jsr RWDetect
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bcs .10
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>LDAXI MSG.RW.OK
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jsr PrintCStrAX
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bra A2osX.Z80
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.10 jsr RWInit
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bcc .1
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>LDAXI MSG.RW.KO1
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jsr PrintCStrAX
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bra A2osX.Z80
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.1 pha
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>LDAXI MSG.RW.OK1
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jsr PrintCStrAX
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jsr RWInstall
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bcc .2
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>LDAXI MSG.RW.KO2
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jsr PrintCStrAX
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bra A2osX.Z80
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.2 >LDAXI MSG.RW.OK2
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jsr PrintCStrAX
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jsr RWFormat
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bcc .3
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>LDAXI MSG.RW.KO3
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jsr PrintCStrAX
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bra A2osX.Z80
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.3 >LDAXI MSG.RW.OK3
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jsr PrintCStrAX
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*--------------------------------------
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RWDetect jsr MLI
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.DA #MLIONLINE
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.DA RW.ONLINE
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rts
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*--------------------------------------
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RW.ONLINE .DA #2
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.DA #$30 Slot 3,Drive 1
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.DA RW.ONLINEBUFFER
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RW.ONLINEBUFFER .BS 16
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*--------------------------------------
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RWInit php
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sei
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sta SETALTZP
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ldx #0 start detection at page $00
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.1 stx RWBankSelect
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lda 0
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sta RW.SAVEZP0,x save Bank 0 $0000 to prevent ALTZP trash
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lda 1
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sta RW.SAVEZP1,x
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inx
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bne .1
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lda #0
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.2 sta RWBankSelect
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sta 0
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eor #$FF
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sta 1
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eor #$FF
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inc
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bne .2
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ldx #0
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.3 txa
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sta RWBankSelect
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cmp 0
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bne .4
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eor #$FF
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cmp 1
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bne .4
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inx
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bne .3
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dex we reached 0,last detected page was 255
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.4 ldy #255 X = detected page count
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.6 sty RWBankSelect
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lda RW.SAVEZP0,y
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sta 0
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lda RW.SAVEZP1,y
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sta 1
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dey
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bne .6
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stz RWBankSelect
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lda RW.SAVEZP0 Don't forget to restore Bank 0
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sta 0
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lda RW.SAVEZP1
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sta 1
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txa
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stx RW.PGCNT PGCNT = last detected page, as we do -1 for AuxMem
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sta CLRALTZP
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plp
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lda RW.PGCNT
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beq .9
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clc
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rts
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.9 sec
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rts
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*--------------------------------------
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*
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*--------------------------------------
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RWInstall lda RRAMWRAMBNK1
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lda RRAMWRAMBNK1
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ldx #RWDRV.SIZE
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.1 lda RWDRV.B.START-1,x
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sta RWDRV.START-1,x
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dex
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bne .1
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lda RW.PGCNT
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lsr
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sta RWDRV.MAXHI+1
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lda #0
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ror
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sta RWDRV.MAXLO+1
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lda RROMBNK1
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sta SETWRITEAUX
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ldx #RWDRVX.SIZE
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.2 lda RWDRVX.B.START-1,x
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sta RWDRVX.START-1,x
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dex
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bne .2
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sta CLRWRITEAUX
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inc DEVCNT
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ldx DEVCNT
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lda #$30 Slot 3,Drive 1
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sta DEVLST,x
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lda #RWDRV.START
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sta DEVPTRS3D1
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lda /RWDRV.START
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sta DEVPTRS3D1+1
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clc
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rts
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*--------------------------------------
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*
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*--------------------------------------
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RWFormat jsr RW.BLOCK.SET00
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lda RW.PGCNT
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lsr
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sta RW.BLOCK2.TB+1
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lda #0
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ror
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sta RW.BLOCK2.TB
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jsr MLI
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.DA #MLIGETTIME
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.DA 0
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ldx #3
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.1 lda DATELO,x
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sta RW.BLOCK2.CT,x
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dex
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bpl .1
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ldx #RW.BLOCK2.END-RW.BLOCK2
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.2 lda RW.BLOCK2-1,x
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sta RW.BLOCK-1,x
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dex
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bne .2
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jsr MLI Write Block 2,First VOL directory block
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.DA #MLIWRITEBLOCK
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.DA RW.MLIWRITEBLOCK
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bcc .22
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rts
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*--------------------------------------
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.22 jsr RW.BLOCK.SET00
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lda #2
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sta RW.BLOCK LO byte of previous block pointer
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inc RW.MLIWRITEBLOCK.BLK
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jsr MLI Write Block 3,Last VOL directory block
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.DA #MLIWRITEBLOCK
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.DA RW.MLIWRITEBLOCK
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bcc .33
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rts
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*--------------------------------------
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.33 lda RW.PGCNT divide RW.PGCNT by 32 to get how many bitmap
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lsr blocks we need :
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lsr 1 page = 128 blocks = 16 bytes
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lsr 32 pages = 512 bytes = 1 Block
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lsr
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lsr
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sta RW.FBITMAPCNT store FULL bitmap block count needed
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tax
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lda RW.PGCNT
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and #$1F need an extra incomplete bitmap block?
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beq .3
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inx
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.3 stx RW.BITMAPCNT store TOTAL bitmap block needed
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.4 lda RW.FBITMAPCNT
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beq .49
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dec RW.FBITMAPCNT
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jsr RW.BLOCK.SETFF
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bra .5
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.49 jsr RW.BLOCK.SET00
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lda RW.PGCNT
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and #$1F compute incomplete bitmap block
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asl
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asl
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asl
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asl times 16 for byte count
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tay
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lda #$FF
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bcc .42 first half of block only
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ldx #0
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.40 sta RW.BLOCK,x
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inx
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bne .40
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cpy #0
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beq .5
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.41 sta RW.BLOCK+$ff,y
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dey
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bne .41
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bra .5
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.42 sta RW.BLOCK-1,y
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dey
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bne .42
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.5 inc RW.MLIWRITEBLOCK.BLK
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lda RW.MLIWRITEBLOCK.BLK
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cmp #4 Are we writing first volume bitmap ?
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bne .63 no, regular one
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lda #$CF Mark Block 0 & 1 free, 2,3 used (vol hdr)
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sta RW.BLOCK
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ldy #0
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lda #$8 Start a BLOCK 4 (%00001000)
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ldx RW.BITMAPCNT
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.62 pha
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eor RW.BLOCK,y Mark bitmap blocks as "used"
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sta RW.BLOCK,y
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pla
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dex
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beq .63
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lsr
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bne .62
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lda #$80
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iny
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bra .62
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.63 jsr MLI Write Block 4,5...
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.DA #MLIWRITEBLOCK
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.DA RW.MLIWRITEBLOCK
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bcs .9
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dec RW.BITMAPCNT another bitmap block needed ?
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bne .4
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clc
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.9 rts
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*--------------------------------------
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RW.BLOCK.SETFF lda #$FF
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bra RW.BLOCK.SET
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RW.BLOCK.SET00 lda #$00
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RW.BLOCK.SET ldx #0
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.1 sta RW.BLOCK,x
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sta RW.BLOCK+$100,x
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inx
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bne .1
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rts
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*--------------------------------------
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RW.MLIWRITEBLOCK
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.DA #3
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.DA #$30 Slot 3,Drive 1
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.DA RW.BLOCK
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RW.MLIWRITEBLOCK.BLK
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.DA 2 Start writing block at #2
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*--------------------------------------
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RW.RAM31 .DA #$30
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.DA #5 len=5 chars
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.AS 'RAM31'
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*--------------------------------------
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RW.PGCNT .BS 1
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RW.FBITMAPCNT .BS 1
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RW.BITMAPCNT .BS 1
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RW.SAVEZP0 .BS 256
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RW.SAVEZP1 .BS 256
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*--------------------------------------
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RW.BLOCK2 .DA 0 pointer to previous block
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.DA 3 pointer to next block
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.DA #$F5 $F=Vol Dir Header, 5=name len
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.AS 'RAM31'
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.BS 10 (RAM31 len=5, fill to 15)
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.HS 0000000000000000
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RW.BLOCK2.CT .BS 4 Creation time
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.HS 0100C3270D version/min version/access/EL/EPB
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.DA 0 File Count
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.DA 4 bitmap pointer (Block 2&3 are Volume directory)
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RW.BLOCK2.TB .BS 2 Total Blocks
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RW.BLOCK2.END .EQ *
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*--------------------------------------
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RW.BLOCK .BS 512
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*--------------------------------------
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MSG.RW >CSTRING "Detecting Ramworks Card..."
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MSG.RW.OK >CSTRING "Already Installed as /RAM31.\n"
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MSG.RW.OK1 >CSTRING "%d Pages Detected.\n"
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MSG.RW.OK2 >CSTRING "RamWorks Driver Installed.\n"
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MSG.RW.OK3 >CSTRING "RamWorks Drive Formatted.\n"
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MSG.RW.KO1 >CSTRING "Not Detected.\n"
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MSG.RW.KO2 >CSTRING "RamWorks Driver Install Error.\n"
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MSG.RW.KO3 >CSTRING "RamWorks Drive Format Error.\n"
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*--------------------------------------
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* Driver for Ramworks in main LC
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* $FF00 -> $FF9A (Inclusive)
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* $FF58 MUST BE $60 (RTS)
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* DO NOT trash DRV.BLKNUM as ProDOS
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* reuses it after Block operation
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*--------------------------------------
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DRV.COMMAND .EQ $42
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DRV.BUFF .EQ $44
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DRV.BLKNUM .EQ $46
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*--------------------------------------
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RWDRV.B.START
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.PH $FF00
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RWDRV.START cld ProDOS will check that byte!!!
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ldy DRV.COMMAND 0 = Status ?
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beq RMDRV.CMDSTATUS
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cpy #3
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beq RWDRV.EXITOK 3 = Format : nothing to do, exit with no error
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bcs RWDRV.IOERR > 3 = Invalid OP, IO error
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lda DRV.BLKNUM
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sec
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sbc RWDRV.MAXLO+1
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lda DRV.BLKNUM+1
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sbc RWDRV.MAXHI+1
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bcs RWDRV.IOERR DRV.BLKNUM >= RW.DRV.SIZE, IO error
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lda DRV.BLKNUM compute PAGE = blocknumLO *2
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asl
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pha
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lda DRV.BLKNUM+1 compute BANK = blocknumHI *2
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rol
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inc +1 for skipping Aux BANK 0
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plx move page into X
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beq RWDRV.GOAUX move from/to aux page0/1
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cpx #$C0
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bcs RWDRV.GOAUX move from/to aux LC
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*--------------------------------------
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* X=Page($02 -> $BF),A=Bank,Y=CMD
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*--------------------------------------
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php
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sei Disable IRQ as no vector set in RW Banks
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sta RWBankSelect Select RAMWorks Bank
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sta CLR80STORE make sure SETREADAUX/SETWRITEAUX effective everywhere
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stx DRV.COMMAND+1 Reuse DRV.COMMAND for RAM PTR
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stz DRV.COMMAND
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dey Y=CMD, zero if read
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bne RWDRV.W CC, go write
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sta SETREADAUX
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ldx #DRV.COMMAND READ:copy from RAM to BUFF
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ldy #DRV.BUFF
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bra RWDRV.RW
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RWDRV.W sta SETWRITEAUX
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ldx #DRV.BUFF
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ldy #DRV.COMMAND WRITE:copy from BUFF to RAM
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RWDRV.RW stx RWDRV.RW.SRC+1
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sty RWDRV.RW.DST+1
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ldx #2 2 pages to copy
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ldy #0
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RWDRV.RW.SRC lda ($FF),y
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RWDRV.RW.DST sta ($FF),y
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iny
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bne RWDRV.RW.SRC
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.HS 24 BIT Zero Page to skip RTS
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RWDRV.RTS rts $FF58 Must Be RTS
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inc DRV.BUFF+1
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inc DRV.COMMAND+1
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dex
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bne RWDRV.RW.SRC
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stz RWBankSelect
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sta CLRREADAUX
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sta CLRWRITEAUX
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plp
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RMDRV.CMDSTATUS
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RWDRV.MAXLO ldx #$FF return device block count in X,Y...
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RWDRV.MAXHI ldy #$FF
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RWDRV.EXITOK lda #0 make A=0
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clc
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rts
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RWDRV.IOERR lda #MLI.ERR.IO Carry already set
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rts
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*--------------------------------------
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* X=Page(0/1 or LC),A=Bank
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*--------------------------------------
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RWDRV.GOAUX pha save BANK
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sta SETWRITEAUX
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ldy #RWDRVX.XM.SIZE Backup begining of $300 to generate move code
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.1 lda RWDRV.XM.RUN-1,y
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sta RWDRVX.XM.SAVE-1,y
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dey
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bne .1
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pla restore BANK
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sta SETREADAUX
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jsr RWDRVX.START Setup Code in main mem at $300 for data move
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* returns : CC=WRITE, CS=READ
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sta CLRREADAUX CLRWRITEAUX already triggered by code copy
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jsr RWDRV.XM.RUN Now execute generated code in main memory
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sta SETREADAUX
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jsr RWDRVX.RESTORE
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sta CLRREADAUX
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rts A & carry setup properly by RWDRVX.RESTORE
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RWDRV.END .EP
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RWDRV.B.END
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RWDRV.SIZE .EQ RWDRV.B.END-RWDRV.B.START
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*--------------------------------------
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* Driver for Ramworks in aux memory
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* $0200 -> $02FF TMP buffer for PAGE copy
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* $0300 -> $03FD (Inclusive)
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* do not trash $03FE-$03FF (IRQ Vector)
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* X=Page(0/1 or LC),A=Bank
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*--------------------------------------
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RMDRVX.TMP .EQ $200
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RWDRV.XM.RUN .EQ $300
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*--------------------------------------
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RWDRVX.B.START
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.PH $0300
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RWDRVX.START sta RWDRVX.XM.BANK+1 setup BANK
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txa
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beq .1 page 0/1, no need to check BANK
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cmp #$D0 $C0 <= PAGE < $D0 ?
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bcc .1 no, store in BNK1
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ora #$10 Remap $C0 page to $D0 BNK2
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.1 ror RWDRVX.XM.RWLC+1 Save Carry to select proper RW bank later
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ldy DRV.BUFF
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ldx DRV.BUFF+1
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lsr DRV.COMMAND DRV.COMMAND: 1=READ,2=WRITE
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bcc .2 CC=WRITE, CS=READ
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stz RWDRVX.XM.SRC+1 READ from src LO = 0
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sta RWDRVX.XM.SRC+2 READ from src HI = PAGE
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sty RWDRVX.XM.DST+1 WRITE to DRV.BUFF
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stx RWDRVX.XM.DST+2
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bra .3
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.2 sty RWDRVX.XM.SRC+1 READ from DRV.BUFF
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stx RWDRVX.XM.SRC+2
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stz RWDRVX.XM.DST+1 WRITE to dst LO = 0
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sta RWDRVX.XM.DST+2 WRITE to dst HI = PAGE
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.3 sta CLRWRITEAUX
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ldy #RWDRVX.XM.SIZE
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.4 lda RWDRVX.XM.START-1,y
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sta RWDRV.XM.RUN-1,y
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dey
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bne .4
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rts
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*--------------------------------------
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* Called form Main LC after RWDRVX.XM execution
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*--------------------------------------
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RWDRVX.RESTORE ldy #RWDRVX.XM.SIZE Now, restore begining of $300
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.1 lda RWDRVX.XM.SAVE-1,y
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sta RWDRV.XM.RUN-1,y
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dey
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bne .1
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tya setup A=0 and CC for exit with non error
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clc
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rts
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*--------------------------------------
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* "auXMove" Code, moved from Aux to main $300
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* $0200 -> $02FF TMP buffer for 2 steps moving between LCs
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* CC=WRITE :
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* CS=READ :
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*--------------------------------------
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RWDRVX.XM.START php
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sei
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ldx #0
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ldy #2 2 pages to copy
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RWDRVX.XM.COPY jsr RWDRV.XM.RUN+RWDRVX.XM.MNLC-RWDRVX.XM.START WRITE:copy from MAIN to TMP
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bcc RWDRVX.XM.SRC CC=WRITE,CS=READ?
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jsr RWDRV.XM.RUN+RWDRVX.XM.RWLC-RWDRVX.XM.START READ:copy from BANK to TMP
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sta SETALTZP
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RWDRVX.XM.SRC lda $FFFF,x
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sta RMDRVX.TMP,x
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inx
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bne RWDRVX.XM.SRC
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sta CLRALTZP
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jsr RWDRV.XM.RUN+RWDRVX.XM.MNLC-RWDRVX.XM.START READ:copy from TMP to MAIN
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bcs RWDRVX.XM.1 CC=WRITE,CS=READ?
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jsr RWDRV.XM.RUN+RWDRVX.XM.RWLC-RWDRVX.XM.START WRITE:copy from TMP to BANK
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sta SETALTZP
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RWDRVX.XM.1 lda RMDRVX.TMP,x
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RWDRVX.XM.DST sta $FFFF,x
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inx
|
||
bne RWDRVX.XM.1
|
||
|
||
sta CLRALTZP
|
||
|
||
inc RWDRV.XM.RUN+RWDRVX.XM.SRC+2-RWDRVX.XM.START
|
||
inc RWDRV.XM.RUN+RWDRVX.XM.DST+2-RWDRVX.XM.START
|
||
dey
|
||
bne RWDRVX.XM.COPY
|
||
|
||
plp
|
||
|
||
RWDRVX.XM.MNLC stz RWBankSelect ProDOS always uses LCBANK1
|
||
bit RRAMWRAMBNK1
|
||
bit RRAMWRAMBNK1
|
||
rts
|
||
|
||
RWDRVX.XM.RWLC lda #$FF
|
||
bpl RWDRVX.XM.BANK
|
||
bit RRAMWRAMBNK2
|
||
bit RRAMWRAMBNK2
|
||
RWDRVX.XM.BANK lda #$FF
|
||
sta RWBankSelect
|
||
rts
|
||
|
||
RWDRVX.XM.END
|
||
*--------------------------------------
|
||
RWDRVX.XM.SIZE .EQ RWDRVX.XM.END-RWDRVX.XM.START
|
||
*--------------------------------------
|
||
RWDRVX.XM.SAVE .BS RWDRVX.XM.SIZE
|
||
*--------------------------------------
|
||
.EP
|
||
*--------------------------------------
|
||
RWDRVX.B.END
|
||
RWDRVX.SIZE .EQ RWDRVX.B.END-RWDRVX.B.START
|
||
*--------------------------------------
|
||
* CONTROL SECTION :
|
||
*--------------------------------------
|
||
.DO RWDRV.RTS=$FF58
|
||
.ELSE
|
||
ERROR:RWDRV.RTS <> $FF58
|
||
.FIN
|
||
.DO RWDRV.SIZE>$9B
|
||
ERROR:RWDRV.SIZE too big
|
||
.FIN
|
||
.DO RWDRVX.SIZE>$FE
|
||
ERROR:RWDRVX.SIZE too big
|
||
.FIN
|
||
.DO RWDRVX.XM.SIZE>$F0
|
||
ERROR:RWDRVX.XM.SIZE too big
|
||
.FIN
|
||
*--------------------------------------
|
||
MAN
|
||
SAVE A2OSX.S.RW
|
||
LOAD A2OSX.S
|
||
ASM
|