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work on the test
This commit is contained in:
Jorj Bauer
parent
b9ffd5ae60
commit
2fd5c6c79b
@ -22,8 +22,35 @@
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.endrep
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.endmacro
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.struct iob_t
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type .byte ; table type (always $01)
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slot .byte ; slot (<<4)
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drive .byte ; drive (1/2)
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volume .byte ; volume ($00 = all)
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track .byte
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sector .byte
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dct .word ; low/hi pointer to a DCT
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data .word ; low/hi pointer to sector data
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unused .word
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bytes .word ; # bytes to read/write ($00 == 256)
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command .byte ; 0=seek, 1=read, 2=write, 4=fmt
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retval .byte ; return code
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retvol .byte ; return volume
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retslot .byte ; return slot
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retdrive .byte ; return drive
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.endstruct
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a_cr = $0d ; Carriage return.
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RWTS_GETIOB = $03E3 ; low returned in Y, high A ($B7E8 is the normal IOB)
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RWTS = $03D9 ; needs IOB address in Y/A
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DOS33_IOB = $B7E8
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IOB = DOS33_IOB
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DOS33_SECBUF = $B4BB ; $B4BB-B5BA
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RWTS_WRTDIR = $B037 ; hidden routine in DOS to call RWTS (cf. AAL Vol2, iss 8)
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RWTS_WRTCMD = $B041 ; ... which wants to call write by default and we modify it to do something else
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F8ROM_YXHEX = $F940
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F8ROM_AXHEX = $F941
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F8ROM_XHEX = $F944 ; print X register in hex -- kills X,A
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@ -50,30 +77,30 @@ DISK_MODEW = $C08F
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;; Zero-page addresses used
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;; 00/01: storage pointer for loops in nybble code
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;; 02/03: second storage pointer for loops in nybble code
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;; 04/05: lookup table indexer for the _trans table
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;; FA/FB: DST pointer for memset
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;; FC/FD: pointer to sector buffer
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;; FF: scratch, used when erasing a track
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ZP_STORPTR = $00
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ZP_STOR2 = $02
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ZP_TRANSP = $04
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DST = $FA
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ZP_SECTP = $FC
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ZP_SCRATCH = $FF
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;; Totally free and clear: 6,7,8,9; eb,ec,ed,ee,ef;fa,fb,fc,fd
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ZP_STORPTR = $06 ;06,07
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ZP_STOR2 = $08 ;08,09
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ZP_SCRATCH = $eb ;just eb
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ZP_TRANSP = $ec ;ec,ed
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DST = $ee ;ee,ef
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ZP_SECTP = $fa ;fa,fb
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ZP_PRINT = $fc ;fc, fd
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.segment "CODE"
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START
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JMP Entry
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Entry
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PHP ;save interrupt state
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SEI ;disable interrupts
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JSR F8ROM_INIT
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JSR F8ROM_HOME
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LDY #>STARTMSG
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LDA #<STARTMSG
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JSR Prtmsg
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ASC "Insert a blank floppy in s6d1 and press a key..."
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.byte $8D, $00
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JSR F8ROM_RDKEY ; wait for a keypress
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;; set up pointers to SECDATA and TRANS62
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@ -101,106 +128,213 @@ Entry
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STA CNT+1
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JSR memset
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;; Seek to track 0
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;; Fill track 0 with as many FF bytes as we think fit. Per
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;; https://retrocomputing.stackexchange.com/questions/503/absolute-maximum-number-of-nibbles-on-an-apple-ii-floppy-disk-track
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;; track 0 can't reasonably fit more than about 8300 nybbles, so
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;; we will write 8400 nybbles to be sure to have cleared any possible
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;; track (track 0 is the physically largest, on the outside of
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;; the disk; so track 35 will be multiply covered easily).
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;; Turn on motor for slot 6, drive 1
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LDX #$60 ; slot 6
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LDA DISKON,X
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LDA DRIVEA,X
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;; and seek out to track 0
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JSR RecalibrateTrack
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;; Wait for it to come to speed
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JSR WaitMotor
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;; Fill the track with 0xFF sync bytes (ensuring we've wiped the track)
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JSR EraseTrack
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;; Write out a track of nybblized sectors to Track 0 for physical
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;; sectors 0 through 15. The data in each is algorithmic, same as
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;; the wozzle test disk pattern test #7 -- 256 incrementing bytes
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;; starting at (sector + track).
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;; Precompute one track of nybblized data at NYBDATA for track 0 (A)
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;; write 40 tracks of data
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LDA #$00
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JSR MakeTrackData
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;; Write it to the track
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JSR WriteTrack
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@writeAnotherTrack
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JSR WriteOneTrack ; takes track number in A and preserves it
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CLC
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ADC #1
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CMP #35
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BNE @writeAnotherTrack
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;; Turn off motor for slot 6, drive 1 and let RWTS turn it back on
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LDX #$60 ; slot 6
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LDA DISKOFF,X
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@rwtstest
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;; using RWTS, validate the sector contents of each sector on the track
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;;
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;; call RWTS to perform the read
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;; ...
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;; Reset the current track
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JSR RecalibrateTrack
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;; Let RWTS think we're changing slots, so it doesn't use any cached
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;; data about the head position
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LDA #$70
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STA DOS33_IOB+iob_t::retslot
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LDA #01
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STA RWTS_WRTCMD ; set read command
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;; Pick track/sector to read
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LDA #$00
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STA $B397 ; track
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LDA #$00
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STA $B398 ; sector
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@readAnotherSector
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LDA $B397
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JSR F8ROM_AHEX
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LDA $B398
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JSR F8ROM_AHEX
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JSR Prtmsg
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ASC " :Reading track/sector"
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.byte $00
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JSR RWTS_WRTDIR
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;; check for an error (detail is in IOB + $0D)
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BCC @noErrors
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JMP rwtsTestsFailed
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@noErrors
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;; Generate the expected block of data so we can validate the sector
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LDA $B397
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STA TARGETTRK
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LDA $B398
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STA TARGETSEC
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JSR MakeSectorData
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;; compare SECDATA against the RWTS sector buffer at DOS33_SECBUF
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LDA TARGETSEC
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JSR F8ROM_AHEX
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JSR Prtmsg
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ASC " : validate sector contents"
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.byte $00
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JSR Seccmp
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BCC @cmpok
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JMP FailedSectorCompare
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@cmpok
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;; *** Something is wrong with the IOB+iob::sector approach -- if I hard code addresses for track/sector this works, but if I use the :: struct mechanism is doesn't
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;; *** ... and the T/S offsets don't match the IOB header, so I'm not
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;; *** sure why storing them at these addresses works - need more
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;; *** RWTS info
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;; *** https://www.txbobsc.com/aal/1982/aal8205.html#a6
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;; Read the next sector
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INC $B398
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LDA $B398
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CMP #$10
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BEQ @nextTrack
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JMP @readAnotherSector
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@nextTrack
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LDA #$00
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STA $B398
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INC $B397
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LDA $B397 ;track
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CMP #$23
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BEQ @doneReadTest
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JMP @readAnotherSector
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@doneReadTest
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;; Find sector # 6 (arbitrarily chosen) and replace its data
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;; with 256 bytes of 0xFF (nybbles 0xFF 0x96 0x96 0x96 ... )
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;; ...
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;; using RWTS, validate the sector contents of all 16 sectors
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;; using RWTS, validate the sector contents of all 16 sectors again
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;; ...
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;; Turn off motor for slot 6, drive 1
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LDX #$60 ; slot 6
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LDA DISKOFF,X
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TestsDone
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LDY #>ENDMSG ; All done, tell the user
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LDA #<ENDMSG
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JSR Prtmsg
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ASC "Test complete, no errors found."
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.byte $00
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Exit
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PLP ;restore interrupts
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LDA #$00
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STA $48 ; RWTS: needs to be cleared after calls
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;; for debugging, show where the sector and nybble data are
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LDA #>SECDATA
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JSR F8ROM_AHEX
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LDA #<SECDATA
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JSR F8ROM_AHEX
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LDY #>SECDATAMSG
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LDA #<SECDATAMSG
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JSR Prtmsg
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ASC " : sector data buffer"
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.byte $00
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LDA #>NYBDATA
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JSR F8ROM_AHEX
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LDA #<NYBDATA
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JSR F8ROM_AHEX
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LDY #>NYBDATAMSG
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LDA #<NYBDATAMSG
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JSR Prtmsg
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ASC " : nybble data buffer"
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.byte $00
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;; Fix DOS where we butchered it
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LDA #02
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STA RWTS_WRTCMD ; reset command to original value ("write")
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;; Turn off motor for slot 6, drive 1 before exiting
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LDX #$60 ; slot 6
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LDA DISKOFF,X
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Exit
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JMP WRVEC ; done; warm-start for the user
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WriteProtected
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LDY #>WPMSG
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LDA #<WPMSG
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rwtsTestsFailed
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LDA IOB+iob_t::retval ; get return code from our IOB
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JSR F8ROM_AHEX ; print it
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JSR Prtmsg
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JMP WRVEC
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ASC " : error reported during RWTS... stopping"
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.byte $00
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JMP Exit
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WriteProtected
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JSR Prtmsg
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ASC "Disk is write protected; aborting"
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.byte $00
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JMP Exit
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FailedSectorCompare
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JSR Prtmsg
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ASC "Sector comparison failed"
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.byte $00
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JMP Exit
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;;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Start of subroutines
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;;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Prtmsg: message address is in Y (high) and A (low)
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;; Prints until it finds a 00 byte; then emits a CR
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Prtmsg STA $42 ;Store the msg loc.
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STY $43
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;; Prtmsg: display text on screen, using inline
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;; null-terminated strings. Trashes A,X,Y, ZP_PRINT, ZP_PRINT+1.
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;; Adds a newline at the end of the string. Strings may be
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;; arbitrarily long. Expects the string to have the high bit
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;; set where necessary; passes the characters directly to COUT.
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LDY #$00 ;Print the message.
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@Loop LDA ($42),Y
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BEQ @Done
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JSR F8ROM_COUT
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Prtmsg
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PLA
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STA ZP_PRINT
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PLA
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STA ZP_PRINT+1
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LDY #$00
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@LoopA
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INY
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JMP @Loop
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@Done
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JSR F8ROM_CROUT
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BNE @noinc
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INC $FD
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@noinc
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TYA
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PHA
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LDA (ZP_PRINT),Y
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BEQ @done
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JSR F8ROM_COUT
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PLA
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TAY
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JMP @LoopA
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@done
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PLA
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CLC
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TYA
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ADC ZP_PRINT
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TAX
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LDA ZP_PRINT+1
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ADC #$00
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PHA
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TXA
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PHA
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JSR F8ROM_CROUT
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RTS
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;; WaitMotor: delay to wait for a drive to come up to speed
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@ -302,10 +436,6 @@ EraseTrack
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;; FIXME: need to be sure WriteTrack does not span pages or the timing
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;; will be broken
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WriteTrack
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LDY #>WRITEMSG
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LDA #<WRITEMSG
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JSR Prtmsg
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LDA #>NYBDATA ; set up ZP_STORPTR to the start of NYBDATA
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STA ZP_STORPTR+1
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LDA #<NYBDATA
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@ -375,10 +505,7 @@ WriteTrack
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;; track (A), and store it at NYBDATA ($2000).
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MakeTrackData
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STA TARGETTRK
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ASL
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ASL
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ASL
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ASL
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LDA #0
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STA TARGETSEC
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LDA #16
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STA SECCOUNT ; we want to write 16 sectors of nyb'd data
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@ -409,11 +536,13 @@ MakeTrackData
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;; Increments ZP_STORPTR as it goes
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;; trashes Y/A
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MakeSectorData
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LDA TARGETTRK
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JSR F8ROM_AHEX
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LDA TARGETSEC
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JSR F8ROM_AHEX
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LDY #>SECTORMSG
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LDA #<SECTORMSG
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JSR Prtmsg
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ASC " : generate sector data"
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.byte $00
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LDY #16 ; write 16 sync bytes
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LDA #$FF
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@ -497,10 +626,6 @@ MakeSectorData
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INC ZP_STORPTR+1
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@SectorDataTime
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LDY #>SECTORMSG2
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LDA #<SECTORMSG2
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JSR Prtmsg
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LDY #00
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;; Now for the fun bit - 343 bytes of data! Prep a 256 byte sector
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@ -578,10 +703,6 @@ Encode6and2
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STY ZP_STOR2+1
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;; Clear output buffer 0x157 bytes
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LDY #>SECTORMSG3
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LDA #<SECTORMSG3
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JSR Prtmsg
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LDY #$00
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LDA #$00
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STA CKSUM ; convenient place to clear the checksum for later
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@ -597,10 +718,6 @@ Encode6and2
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STA (ZP_STOR2),Y
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JMP @ClearNext
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@ClearDone
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LDY #>SECTORMSG4
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LDA #<SECTORMSG4
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JSR Prtmsg
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;; Work through the 256 bytes of data to construct the 6and2 data,
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;; with ZP_SECTP as the input and ZP_STORPTR as the output
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;;
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@ -698,10 +815,6 @@ Encode6and2
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;; and compute the checksum
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;; Checksum is initialized to 0 above
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;; for (int idx6=0; idx6<0x156; idx6++)
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LDY #>SECTORMSG5
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LDA #<SECTORMSG5
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JSR Prtmsg
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LDA #$00
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STA IDX6+1
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STA IDX6
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@ -797,45 +910,91 @@ memset
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BCS @a
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@fin
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RTS
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;; Seccmp: compare SECDATA and DOS33_SECBUF (256 bytes)
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;; return with carry clear if compare is ok; set if differences are
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;; found
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Seccmp
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LDA #>SECDATA
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STA ZP_STORPTR+1
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LDA #<SECDATA
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STA ZP_STORPTR
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LDA #>DOS33_SECBUF
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STA ZP_STOR2+1
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LDA #<DOS33_SECBUF
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STA ZP_STOR2
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LDY #$FF
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@next
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/*
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TYA ;debug message - save Y before & restore after
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PHA
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JSR F8ROM_AHEX ;byte number
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LDA (ZP_STORPTR),Y
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JSR F8ROM_AHEX
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LDA (ZP_STOR2),Y
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JSR F8ROM_AHEX
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JSR Prtmsg
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ASC " : byte cmp"
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.byte $00
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PLA
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TAY
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*/
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LDA (ZP_STORPTR),Y
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SEC
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SBC (ZP_STOR2),Y
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BNE @doneError
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TYA
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BEQ @done ;if Y==0 we're done
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DEY
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JMP @next
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@done
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CLC ;no error
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RTS
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@doneError
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SEC ;error
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RTS
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WriteOneTrack
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;; Fill track with as many FF bytes as we think fit. Per
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;; https://retrocomputing.stackexchange.com/questions/503/absolute-maximum-number-of-nibbles-on-an-apple-ii-floppy-disk-track
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;; track 0 can't reasonably fit more than about 8300 nybbles, so
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;; we will write 8400 nybbles to be sure to have cleared any possible
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;; track (track 0 is the physically largest, on the outside of
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;; the disk; so track 35 will be multiply covered easily).
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PHA ; save A on the way in
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STA TARGETTRK
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;; postion the head for the traget track
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ASL ; multiply by 2
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STA DSTHALFTRK
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JSR MoveTrack
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;; Fill the track with 0xFF sync bytes (ensuring we've wiped the track)
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JSR EraseTrack
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||||
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||||
;; Write out a track of nybblized sectors to Track 0 for physical
|
||||
;; sectors 0 through 15. The data in each is algorithmic, same as
|
||||
;; the wozzle test disk pattern test #7 -- 256 incrementing bytes
|
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;; starting at (sector + track).
|
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|
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;; Precompute one track of nybblized data at NYBDATA for the given track
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LDA TARGETTRK
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JSR MakeTrackData
|
||||
|
||||
;; Write it to the track
|
||||
JSR WriteTrack
|
||||
PLA ; restore A on the way out
|
||||
RTS
|
||||
|
||||
;;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||||
;; Start of data segment
|
||||
;;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||||
STARTMSG
|
||||
ASC "Insert a blank floppy in s6d1 and press a key..."
|
||||
.byte $8D, $00
|
||||
|
||||
SECTORMSG
|
||||
ASC " : Making this sector of data..."
|
||||
.byte $00
|
||||
SECTORMSG2
|
||||
ASC "Building sector data chunk..."
|
||||
.byte $00
|
||||
SECTORMSG3
|
||||
ASC "Clearing output buffer..."
|
||||
.byte $00
|
||||
SECTORMSG4
|
||||
ASC "Constructing 6-and-2 data..."
|
||||
.byte $00
|
||||
SECTORMSG5
|
||||
ASC "Building checksum..."
|
||||
.byte $00
|
||||
ENDMSG
|
||||
ASC "Test complete, no errors found."
|
||||
.byte $00
|
||||
SECDATAMSG
|
||||
ASC " : sector data buffer"
|
||||
.byte $00
|
||||
NYBDATAMSG
|
||||
ASC " : nybble data buffer"
|
||||
.byte $00
|
||||
|
||||
WPMSG
|
||||
ASC "Disk is write protected; aborting"
|
||||
.byte $00
|
||||
WRITEMSG
|
||||
ASC "Writing fresh track..."
|
||||
.byte $00
|
||||
|
||||
;;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||||
;; variable space
|
||||
;;
|
||||
@ -878,10 +1037,18 @@ CNT
|
||||
.byte $00, $00
|
||||
VALUE
|
||||
.byte $00
|
||||
|
||||
/*IOB
|
||||
.tag iob_t*/
|
||||
|
||||
;;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||||
;; Block data area
|
||||
;; Block (read-only) data area
|
||||
;;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||||
DCT
|
||||
.byte $00 ; decide type ($00 = DiskII)
|
||||
.byte $01 ; phases per track ($01 for DiskII)
|
||||
.byte $EF, $D8 ; motor on time count ($EFD8 for DiskII)
|
||||
|
||||
.align 256
|
||||
|
||||
;; 6-and-2 DOS3.3 translation table (here so it doesn't
|
||||
|
||||
Loading…
Reference in New Issue
Block a user