NEW AUTO 3,1 *-------------------------------------- .MA DEBUG :1 bit $C000 bpl :1 sta $C010 .EM *-------------------------------------- .MA DEBUGOA bit $C061 bpl :1 >DEBUG :1 .EQ * .EM *-------------------------------------- H2000 jmp prostart jmp atalkset jmp p16start *-------------------------------------- LDR.MSG.PRODOS .AT "PRODOS FX 0.94" LDR.MSG.UNSUPP .AT "UNSUPPORTED HARDWARE" LDR.MSG.IIe .AT "//e" LDR.MSG.IIc .AT "//c" LDR.MSG.IIgs .AT "IIgs" LDR.MSG.Unknown .AT "Unknown" LDR.MSG.CLK .AT "XClk" LDR.MSG.RAM .AT "/RAM" LDR.MSG.ROOTERR .AT "ERR reading CATALOG" *-------------------------------------- p16start inc LDR.BootFlag set = 2 for GQuit rts atalkset inc LDR.BootFlag set = 1 for appletalk rts prostart lda unitnum sta LDR.MLIOL.P+1 .DO READCAT=1 sta LDR.MLIRB.P+1 .FIN cld bit RROMBNK2 sta CLR80DISP sta CLR80STORE jsr init jsr setvid jsr setkbd jsr home lda #32 ldx #39 .1 sta $400,x dex bpl .1 ldx #LDR.MSG.PRODOS jsr LDR.PrintX sec jsr idroutine returns system info bcs .2 taken if not a //gs lda #$80 trb newvideo video mode select * test for at least a 65c02 .2 sed lda #$99 clc adc #$01 cld bmi LDR.UNSUPP.HW stz auxsp sta SETALTZP stz auxsp lda auxsp bne LDR.UNSUPP.HW dec auxsp init aux sp to $FF lda auxsp beq LDR.UNSUPP.HW sta CLRALTZP lda auxsp bne LDR.UNSUPP.HW NO 128k LDR.CheckROM ldx #LDR.MSG.IIE lda #MACHID.T.IIe+MACHID.M.128+MACHID.COL80 ldy version check hardware id cpy #$06 apple //e? beq .1 if yes cpy #$EA apple //+ or ///? beq LDR.UNSUPP.HW ldx #LDR.MSG.UNKNOWN bra m128k machine is unknown, Assume //e Enh 128k .1 ldy zidbyte //c ? bne .2 ldy kbd //c, check for keypress cpy #$9B escape? (to disable accelerator) bne .11 sta KBDSTROBE clear keyboard .11 lda #MACHID.T.IIc+MACHID.M.128+MACHID.COL80 ldx #LDR.MSG.IIC bra m128k .2 cpy #$EA beq LDR.UNSUPP.HW //e UNenh.... cpy #$E0 beq .3 ldx #LDR.MSG.UNKNOWN bra m128k not a //e Enh.... .3 sec jsr idroutine //gs ???? bcs m128k no..... inc LDR.cortland ldx #LDR.MSG.IIGS lda #MACHID.T.IIe+MACHID.M.128+MACHID.COL80+MACHID.CLK bra m128k LDR.UNSUPP.HW ldx #LDR.MSG.UNSUPP jsr LDR.PrintX bne * no BRA !!! (6502) *-------------------------------------- m128k sta idapple Save MACHID in temp location lda #$20 "PRODOS" -> "ProDOS" tsb LDR.MSG.PRODOS+1 tsb LDR.MSG.PRODOS+2 jsr LDR.Scr80Select jsr LDR.Scr80Init ldx #$F .2 lda LDR.3F0,x sta $3F0,x dex bpl .2 lda #$01 patch for the gs rom trb statereg to force off intcxrom ldx #PAKME.ILDR-PAKME.Table ldy #ILDR.START lda /ILDR.START jsr X.Unpak.XatYA ldx #PAKME.GP-PAKME.Table ldy #MLI lda /MLI jsr X.Unpak.XatYA jsr lc1in switch in language card bank 1. ldx #PAKME.XRW-PAKME.Table ldy #$D000 lda /$D000 jsr X.Unpak.XatYA ldx #0 .1 stz FCBs,x stz VCBs,x inx bne .1 ldx #PAKME.XDOS-PAKME.Table ldy #$DE00 lda /$DE00 jsr X.Unpak.XatYA ldx #XDOS.DATA.LEN .3 stz XDOS.DATA-1,x dex bne .3 ldx #PAKME.IRQ-PAKME.Table ldy #$FF9B lda /$FF9B jsr X.Unpak.XatYA LDR.IRQ lda RROMWRAMBNK2 ldy irqv interrupt vector ldx irqv+1 x = high byte jsr lc1in set language card bank 1 to r/w sta SETALTZP stx irqv+1 interrupt vector sty irqv save irq vector in aux lc sta CLRALTZP stx irqv+1 save irq vector in main lc sty irqv lda #calldisp sta jspare+1 P8 system death vector lda /calldisp sta jspare+2 .DO LOWERCASE=0 lda kversion sta xdosver save current version for dir use .FIN lda idapple sta MACHID lda LDR.cortland beq LDR.II branch if // family *-------------------------------------- LDR.IIGS sta cortflag lda #calldisp sta cortdisp lda /calldisp sta cortdisp+1 * lda RROMWRAMBNK2 * stz vmode force setvid to reset cursor * jsr setvid reset output to screen * jsr lc1in set language card bank 1 to r/w lda #'C' ldx PAKME.CCLK ldy PAKME.CCLK+1 jsr LDR.SetupCLK * ldx #PAKME.SEL2-PAKME.Table * ldy #$1000 * lda /$1000 * jsr X.Unpak.XatYA ldx #PAKME.SEL2-PAKME.Table jsr LDR.SetupQC *-------------------------------------- lda LDR.BootFlag bne .1 branch if prodos 8 alone * running from gs/os shell so zero out os_boot for appletalk sta OS_BOOT indicates O/S initially booted. jsr patch101 patch for gs/os - rev note #101 .1 bra LDR.Common *-------------------------------------- LDR.II ldx #PAKME.SEL1-PAKME.Table jsr LDR.SetupQC jsr LDR.ClkDevScan *-------------------------------------- LDR.Common jsr LDR.BlkDevScan jsr LDR.SetupRAM *-------------------------------------- lda LDR.BootFlag get setup entry point flag beq LDR.ReadRoot taken if normal boot. lda RROMBNK2 rts return to caller at setup entry point. *-------------------------------------- LDR.ReadRoot lda LDR.MLIOL.P+1 place boot devnum in globals sta devnum last device used jsr MLI .DA #MLIONLINE .DA LDR.MLIOL.P bcs .9 lda pbuf+1 get volume name length. and #$0F strip devnum beq .9 inc add 1 for leading '/' sta pbuf save prefix length. lda #'/' place leading '/' in prefix buffer sta pbuf+1 jsr MLI .DA #MLISETPREFIX .DA LDR.MLISETP.P bcs .9 .DO READCAT=1 stz dst lda /dbuf ldy #$02 read directory into buffer ldx #0 .1 sta dst+1 sta LDR.MLIRB.P+3 Data buf HI sty LDR.MLIRB.P+4 Blk Num LO stx LDR.MLIRB.P+5 Blk Num HI jsr MLI .DA #MLIREADBLOCK .DA LDR.MLIRB.P bcs .9 ldy #$03 get next block# from link lda (dst),y tax dey ora (dst),y 00 00 -> Last Block beq .8 lda (dst),y tay lda dst+1 inc inc add $200 to buffer pointer cmp /dbuf+$800 until it points past end of buffer. bcc .1 if ok, read next block. .FIN .8 jmp $800 jmp to "load interpreter" code .9 ldx #LDR.MSG.ROOTERR jsr LDR.PrintX bra * *-------------------------------------- LDR.SetupQC bit RRAMWRAMBNK2 read/write RAM bank 2 bit RRAMWRAMBNK2 ldy #$D100 lda /$D100 jsr X.Unpak.XatYA lda #$EE byte to distinguish LC bank 2 sta $D000 jmp lc1in switch in LC bank 1 *-------------------------------------- DS1216E.DATA1 .EQ idxl DS1216E.DATA2 .EQ A1L *-------------------------------------- LDR.ClkDevScan lda RDCXROM php sei sta SETCXROM sta $C300 lda $C00B Workaround for Ultrawarp bug ldx #8 .1 ldy #8 .2 lda $C304 lsr ror DS1216E.DATA1-1,x dey bne .2 dex bne .1 sta $C300 lda $C304 Reset DS1216E comparison register with READ A2=1 ldx #8 Read 8 bytes... .3 ldy #8 ....of 8 bits lda DS1216E.SIG-1,x .4 lsr bcs .5 bit $C300 bra .50 .5 bit $C301 Write Pattern bit in A0, with A2=0 .50 dey bne .4 dex bne .3 ldx #8 .6 ldy #8 .7 lda $C304 lsr ror DS1216E.DATA2-1,x dey bne .7 dex bne .6 plp bmi .8 sta CLRCXROM .8 ldx #8 .9 lda DS1216E.DATA1-1,x cmp DS1216E.DATA2-1,x bne .90 dex bne .9 bra LDR.ClkDevTCLK .90 lda #'N' ldx PAKME.NCLK ldy PAKME.NCLK+1 bra LDR.SetupCLK *-------------------------------------- LDR.ClkDevTCLK stz idxl lda #$C1 sta idxl+1 lda #1 sta LDR.SlotIdx .1 jsr LDR.CheckTClkID bcs .7 sta SETPAGE2 stz $478,x stz $7f8,x sta CLRPAGE2 stz $478,x stz $7f8,x lda idxl+1 asl asl asl asl tax stz $c080,x lda $c088,x lda $c080,x lda #'T' ldx PAKME.TCLK ldy PAKME.TCLK+1 jsr LDR.SetupCLK lda idxl+1 sta TCLK.Cx1+2 sta TCLK.Cx2+2 rts .7 inc LDR.SlotIdx inc idxl+1 lda idxl+1 cmp #$C8 bne .1 rts *-------------------------------------- LDR.SetupCLK stx ZPInBufPtr sty ZPInBufPtr+1 sta LDR.MSG.CLK bit RROMBNK2 ldx #LDR.MSG.CLK jsr LDR.PrintX jsr lc1in lda #$D742 sta ZPOutBufPtr lda /$D742 sta ZPOutBufPtr+1 jsr X.Unpak lda #$4C enable clock routine by putting a jmp sta clockv in front of clock vector lda #MACHID.CLK tsb MACHID LDR.SetupCLK.RTS rts *-------------------------------------- LDR.SetupRAM lda DEVCNT cmp #13 bcs LDR.SetupCLK.RTS jsr lc1in ldx #PAKME.RAM-PAKME.Table ldy #$FF00 lda /$FF00 jsr X.Unpak.XatYA sta SETWRITEAUX ldx #PAKME.RAMX-PAKME.Table ldy #$0200 lda /$0200 jsr X.Unpak.XatYA sta CLRWRITEAUX lda #RAMDRV put driver address into sta DEVPTRS3D2 lda /RAMDRV sta DEVPTRS3D2+1 inc DEVCNT count (-1) active devices ldx DEVCNT lda #$BF unit num of /RAM sta DEVLST,x ldx #LDR.MSG.RAM jmp LDR.PrintX *-------------------------------------- * find all disk devices in system slots and set up address * and device table in prodos global page. *-------------------------------------- LDR.BlkDevScan stz idxl lda #$C7 search slots from high to low sta idxl+1 lda #7 sta LDR.SlotIdx .1 ldx LDR.SlotIdx stz LDR.SlotDevType-1,x jsr LDR.CheckDiskID bcs .8 if no ProDOS device in this slot. ldy #$ff lda (idxl),y check last byte of $Cn rom (y = $ff) bne .2 branch if 16 sector disk II. sta devid =0 since disk ii's have null attributes lda #XRW.START sta LDR.driveradr lda /XRW.START sta LDR.driveradr+1 sec 2 devices jsr LDR.AddBlkDevs bra .7 .2 cmp #$FF if = $FF then 13 sector disk II. beq .8 ignore if 13 sector boot ROM ldy #$07 check for a smartport device. lda (idxl),y bne .3 no smartport jsr LDR.AddSPDevs bra .7 .3 ldy #$FE BLK device... lda (idxl),y get attributes. and #$03 verify it provides read and status calls. cmp #$03 bne .7 assume it's an off-brand disk lda (idxl),y get back ID byte lsr lsr lsr lsr sta devid ->DEV LIST NIBBLE and #$3 Device count minus 1 inc ldx LDR.SlotIdx sta LDR.SlotDevCnt-1,x tax iny $CnFF lda (idxl),y sta LDR.driveradr lda idxl+1 store hi entry addr (low already done) sta LDR.driveradr+1 cpx #2 CS if 2 devs or more jsr LDR.AddBlkDevs install 1 or 2 devices from this slot. .7 .8 dec idxl+1 next lower slot. dec LDR.SlotIdx have all slots been checked ? bne .1 *-------------------------------------- LDR.AddExtraDevs * stz idxl lda #$C7 sta idxl+1 lda #7 sta LDR.SlotIdx .1 ldx LDR.SlotIdx lda LDR.SlotDevType-1,x beq .8 lda LDR.SlotDevCnt-1,x cmp #3 bcc .8 jsr LDR.AddExtraSPDevs .8 dec idxl+1 dec LDR.SlotIdx bne .1 LDR.AddExtraDevs.RTS rts *-------------------------------------- LDR.AddSPDevs jsr LDR.SetDevID setup the devid byte from attributes iny #$ff lda (idxl),y sta LDR.driveradr sta .1+1 modify operand clc adc #$03 sta LDR.SPVect+1 lda idxl+1 sta LDR.driveradr+1 sta LDR.SPVect+2 sta .1+2 modify operand asl convert $Cn to $n0 asl asl asl sta unitnum unit number stz A4L force a prodos status call stz buf dummy pointer lda #$10 sta buf+1 dummy pointer should be <> 0 stz bloknml # of bytes to transfer stz bloknml+1 .1 jsr $0000 SELF MODIFIED ldy #$FB lda (idxl),y check device id and #$02 SCSI ? beq .2 no, no need to init Cocoon jsr LDR.SPStatusCall status of Cocoon : A = device = 2 for SCSI .2 lda #0 set unit# = 0 jsr LDR.SPStatusCall lda LDR.SPStatusBuf Device count beq LDR.AddExtraDevs.RTS no devices, so done. * sta LDR.DevCnt ldx LDR.SlotIdx inc LDR.SlotDevType-1,x set as smartport *.3 inc LDR.SPStatus.U * jsr LDR.SPStatusCall.U call to get the device status * bcs .7 * lda LDR.SPStatusBuf * bpl .7 not a block device * ldx LDR.SlotIdx * inc LDR.SlotDevCnt-1,x *.7 dec LDR.DevCnt * bne .3 * ldx LDR.SlotIdx * lda LDR.SlotDevCnt-1,x * beq LDR.AddBlkDevs.RTS sta LDR.SlotDevCnt-1,x cmp #2 CC/CS, add 1 or 2 devs *-------------------------------------- LDR.AddBlkDevs php how many drives (carry). lda idxl+1 get index to global device table and #$07 for this slot... asl tay into y reg. asl asl now form device # = slot # asl in high nibble. ora devid combine with attributes. ldx DEVCNT inx put device # into device list. sta DEVLST,x asl now form drive 2 device number, if any. plp restore # of devices in carry. ror if 2 drives, then bit 7=1. bpl .1 branch if a 1 drive device (e.g. hard drive) inx else presume that 2nd drive is present. sta DEVLST,x active device list. .1 stx DEVCNT save updated device count. asl shift # of drives back into carry. lda LDR.driveradr get high address of device driver. sta DEVPTRS,y device driver table 1. bcc .2 branch if single drive. sta DEVPTRS+16,y device driver table 2. .2 lda LDR.driveradr+1 sta DEVPTRS+1,y bcc .3 sta DEVPTRS+17,y .3 LDR.AddBlkDevs.RTS rts *-------------------------------------- LDR.AddExtraSPDevs ldy #$FF get smartport address. lda (idxl),y clc adc #$03 add 3 for smartport call sta LDR.SPVect+1 lda idxl+1 sta LDR.SPVect+2 jsr LDR.SetDevID set up device attributes lda #0 jsr LDR.SPStatusCall do a status call on smartport itself lda LDR.SPStatusBuf # of devices on smartport cmp #$03 bcc .8 only 2 devices,skip to next one. dec dec sta LDR.DevCnt lda #3 sta LDR.SPStatus.U .1 jsr LDR.SPStatusCall.U do status call lda LDR.SPStatusBuf is this a block device? bpl .2 jsr LDR.MountSPDevs bcs .8 .2 inc LDR.SPStatus.U dec LDR.DevCnt bne .1 .8 rts *-------------------------------------- LDR.MountSPDevs ldx #LDR.DEVPTRS.CNT-1 .1 ldy LDR.DEVPTRS.IDX,x lda DEVPTRS,y device driver table 1 cmp #nodevice bne .2 lda DEVPTRS+1,y cmp /nodevice beq .3 .2 dex bpl .1 sec rts .3 jsr lc1in write enable LC ram bank 1. tya divide index by 2 lsr tax lda LDR.SPStatus.U sta XDOS.SPUnit-1,x store the smartport unit # lda LDR.SPVect+1 and entry address. sta XDOS.SPVectLo-1,x lda LDR.SPVect+2 sta XDOS.SPVectHi-1,x lda RROMBNK2 write protect lc ram. inc DEVCNT ldx DEVCNT tya asl convert to DSSS0000 asl asl ora devid include device attributes sta DEVLST,x in the active device list. lda #XDOS.SPREMAP sta DEVPTRS,y device driver table 1 lda /XDOS.SPREMAP sta DEVPTRS+1,y clc rts *-------------------------------------- LDR.SPStatusCall sta LDR.SPStatus.U device = 2 for SCSI LDR.SPStatusCall.U LDR.SPVect jsr $0000 self modifying .HS 00 .DA LDR.SPStatus.P rts *-------------------------------------- LDR.CheckTClkID ldy #6 .HS 2C BIT ABS LDR.CheckDiskID ldy #5 lda CLRC8ROM switch out $C8 ROMs .1 lda (idxl),y compare id bytes cmp dskid,y bne .3 dey dey bpl .1 loop until all 4 id bytes match. clc php .8 ldx LDR.SlotIdx lda sltbit-1,x tsb rommap mark bit to flag rom present .9 plp rts .3 sec php ldx #0 .4 cmp (idxl),y bne .9 inx bne .4 bra .8 *-------------------------------------- LDR.SetDevID ldy #$FE check attributes byte. lda (idxl),y lsr move hi nibble to lo nibble for lsr device table entries. lsr lsr sta devid rts *-------------------------------------- LDR.Scr80Select php sei sta SETC3ROM ldx #COL80IDX.Cnt-1 .1 ldy COL80IDX,x lda $C300,y cmp COL80VAL,x bne .9 dex bpl .1 lda $C30C is it an apple 80 col compatible card? and #$F0 cmp #$80 bne .9 plp rts .9 sta CLRC3ROM plp rts *-------------------------------------- LDR.Scr80Init lda #$8C Reset 80 col screen ($0C:HOME) jsr $C300 jsr setnorm jsr home jsr SETINV .DO LOGO lda #20 sta CV jsr VTAB lda #LOGO.PAKED sta ZPInBufPtr lda /LOGO.PAKED sta ZPInBufPtr+1 stz ZPOutBufPtr lda #$A0 sta ZPOutBufPtr+1 jsr X.Unpak sta CLRHIRES sta SETMIXED bit RDIOUDIS sta SETIOUDIS sta SETDHIRES bmi .10 sta CLRIOUDIS .10 sta CLRTEXT stz ZPPtr1 lda #$A0 sta ZPPtr1+1 lda #0 .1 pha jsr GBSCALC ldy #0 .2 lda (ZPPtr1),y pha and #$f tax lda PALETTE.AUX,x sta SETPAGE2 sta (GBASL),y pla lsr lsr lsr lsr tax lda PALETTE.MAIN,x sta CLRPAGE2 sta (GBASL),y iny cpy #40 bne .2 lda ZPPtr1 clc adc #40 sta ZPPtr1 bcc .3 inc ZPPtr1+1 .3 ldy #0 .4 lda (ZPPtr1),y pha and #$f tax lda PALETTE.AUX,x asl asl asl asl sta SETPAGE2 ora (GBASL),y sta (GBASL),y pla lsr lsr lsr lsr tax lda PALETTE.MAIN,x asl asl asl asl sta CLRPAGE2 ora (GBASL),y sta (GBASL),y iny cpy #40 bne .4 lda ZPPtr1 clc adc #40 sta ZPPtr1 bcc .7 inc ZPPtr1+1 .7 pla inc cmp #20 bne .1 .FIN jsr CLREOL jsr setnorm ldx #LDR.MSG.PRODOS *-------------------------------------- LDR.PrintX bit RROMBNK2 lda INVFLG pha jsr SETINV .1 lda $2000,x pha ora #$80 jsr COUT inx pla bpl .1 lda #$A0 jsr COUT pla sta INVFLG rts *-------------------------------------- PALETTE.MAIN .HS 00.02.04.06.08.0A.0C.0E .HS 01.03.05.07.09.0B.0D.0F PALETTE.AUX .HS 00.01.02.03.04.05.06.07 .HS 08.09.0A.0B.0C.0D.0E.0F *-------------------------------------- * 16 bytes moved to $03F0 vectors *-------------------------------------- LDR.3F0 .DA breakv .DA oldrst .DA #$5A powerup byte jmp oldrst '&' vector jmp oldrst ctrl-y vector .HS 004000 .DA GP.IRQV global page interrupt vector lc1in lda RRAMWRAMBNK1 lda RRAMWRAMBNK1 rts *-------------------------------------- * patch to gsos vectors so error is returned for os calls - rev note #101 *-------------------------------------- patch101 php sei disable interrupts clc xce full native mode >LONGMX phb save DBR pha pha pea $0000 length of patch pea $0010 0000/0010 = 16 bytes pea $3101 user id for prodos 8 pea $8018 attributes (locked/nospec/nocross) pha pha >IIGS NewHandle lda $01,s retrieve handle tax lda $03,s tay pea $0000 copy the code into the handle pea L2C4D phy phx pea $0000 length of patch = 0000/0010 pea $0010 >IIGS PtrToHand plx low word of handle plb set DBR to handle's bank lda >1,x get upper 16 bits of 24 bit address tay save in y lda >0,x get low 8 bits of address and ##$00FF clear high byte xba put address in high byte ora ##$005C include JML opcode sta GSOS2 store in gsos vectors clc adc ##$000B sta GSOS tya store upper 16 bits too sta GSOS2+2 adc ##$0000 adj for possible page crossing sta GSOS+2 plb remove garbage byte from stack plb restore DBR. sec xce back to emulation mode plp rts *-------------------------------------- * copy of the code that goes in the handle *-------------------------------------- L2C4D lda 1,s sta 7,s lda 2,s sta 8,s pla pla pla lda ##$00FF #NoOS sec rtl *-------------------------------------- DS1216E.SIG .HS 5CA33AC55CA33AC5 Reverted 7->0 *-------------------------------------- * id bytes: evens for clock, odds for disk dskid .HS 08.20.28.00.58.03.70 sltbit .HS 02040810204080 *-------------------------------------- COL80IDX .HS 05070BFA + $C30C and $80 = $80 COL80IDX.Cnt .EQ *-COL80IDX COL80VAL .HS 3818012C *-------------------------------------- LDR.MLIOL.P .DA #2 .DA #$60 .DA pbuf+1 LDR.MLISETP.P .DA #1 .DA pbuf .DO READCAT=1 LDR.MLIRB.P .DA #3 .DA #0 unit number .DA 0 2 byte data buffer .DA 0 2 byte block number .FIN LDR.SPStatus.P .DA #$03 # of parms LDR.SPStatus.U .DA #$00 unit number (code for smartport stat) .DA LDR.SPStatusBuf .DA #00 status code (0 = general status) LDR.DEVPTRS.CNT .EQ 14 LDR.DEVPTRS.IDX .DA #$16 S3D2 .DA #$12 S1D2 .DA #$02 S1D1 .DA #$14 S2D2 .DA #$04 S2D1 .DA #$18 S4D2 .DA #$08 S4D1 .DA #$06 S3D1 .DA #$1A S5D2 .DA #$0A S5D1 .DA #$1C S6D2 .DA #$0C S6D1 .DA #$1E S7D2 .DA #$0E S7D1 *-------------------------------------- LDR.cortland .DA #0 cortland loader flag (1 = Cortland) LDR.BootFlag .DA #0 0 = normal boot, <>0 = return *-------------------------------------- LDR.SPStatusBuf .BS 8 8 bytes for smartport call LDR.driveradr .BS 2 LDR.SlotIdx .BS 1 LDR.DevCnt .BS 1 LDR.SlotDevType .BS 7 LDR.SlotDevCnt .BS 7 *-------------------------------------- MAN SAVE usr/src/prodos.fx/prodos.s.ldr LOAD usr/src/prodos.fx/prodos.s ASM