mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-12-26 11:30:12 +00:00
qboot2: qboot, but set up so code is reusable
it's fast!
This commit is contained in:
Vince Weaver
parent
8e1eeb0376
commit
0d32e8040f
@ -52,7 +52,7 @@ int main(int argc, char **argv) {
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fprintf(stderr,"Warning! Unusual track number %d\n",track);
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}
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if (track>15) {
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if (sector>15) {
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fprintf(stderr,"Warning! Unusual sector number %d\n",sector);
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}
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41
qboot2/80s.s
Normal file
41
qboot2/80s.s
Normal file
@ -0,0 +1,41 @@
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SET_GR = $C050
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FULLGR = $C052
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PAGE0 = $C054
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HIRES = $C057
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WAIT = $FCA8 ;; delay 1/2(26+27A+5A^2) us
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KEYPRESS = $C000
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KEYRESET = $C010
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the_1980s:
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bit SET_GR
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bit FULLGR
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bit PAGE0
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bit HIRES
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forever:
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lda KEYPRESS
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bpl forever
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bit KEYRESET
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;============================
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; setup load code
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;============================
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WHICH_LOAD = $80
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lda #1
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sta WHICH_LOAD
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jmp $119A
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.align $100
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.incbin "new_80s.hgr"
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BIN
qboot2/CHANNELWOODC.BIN
Normal file
BIN
qboot2/CHANNELWOODC.BIN
Normal file
Binary file not shown.
BIN
qboot2/MYSTC.BIN
Normal file
BIN
qboot2/MYSTC.BIN
Normal file
Binary file not shown.
72
qboot2/Makefile
Normal file
72
qboot2/Makefile
Normal file
@ -0,0 +1,72 @@
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include ../Makefile.inc
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DOS33 = ../dos33fs-utils/dos33
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DOS33_RAW = ../dos33fs-utils/dos33_raw
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all: boot.dsk
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boot.dsk: BOOT THE80S LS MY1 MY2 MY3
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cp empty.dsk boot.dsk
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$(DOS33_RAW) boot.dsk 0 0 BOOT 0 1
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$(DOS33_RAW) boot.dsk 0 2 BOOT 1 1
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$(DOS33_RAW) boot.dsk 0 4 BOOT 2 1
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$(DOS33_RAW) boot.dsk 3 0 THE80S 0 33
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$(DOS33_RAW) boot.dsk 8 0 LS 0 33
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$(DOS33_RAW) boot.dsk 13 0 MY1 0 33
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$(DOS33_RAW) boot.dsk 18 0 MY2 0 33
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$(DOS33_RAW) boot.dsk 23 0 MY3 0 33
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BOOT: boot_sector.o
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ld65 -o BOOT boot_sector.o -C ../linker_scripts/apple2_800.inc
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boot_sector.o: boot_sector.s stage2.s
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ca65 -o boot_sector.o boot_sector.s -l boot_sector.lst
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###
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LS: ls.o
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ld65 -o LS ls.o -C ../linker_scripts/apple2_1f00.inc
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ls.o: ls.s lsc.hgr
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ca65 -o ls.o ls.s -l ls.lst
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###
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MY1: my1.o
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ld65 -o MY1 my1.o -C ../linker_scripts/apple2_1f00.inc
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my1.o: my1.s
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ca65 -o my1.o my1.s -l my1.lst
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###
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MY2: my2.o
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ld65 -o MY2 my2.o -C ../linker_scripts/apple2_1f00.inc
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my2.o: my2.s
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ca65 -o my2.o my2.s -l my2.lst
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###
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MY3: my3.o
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ld65 -o MY3 my3.o -C ../linker_scripts/apple2_1f00.inc
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my3.o: my3.s
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ca65 -o my3.o my3.s -l my3.lst
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###
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THE80S: 80s.o
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ld65 -o THE80S 80s.o -C ../linker_scripts/apple2_1f00.inc
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80s.o: 80s.s new_80s.hgr
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ca65 -o 80s.o 80s.s -l 80s.lst
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#new_80s.hgr: new_80s.png
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# ../hgr-utils/png2hgr new_80s.png > new_80s.hgr
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clean:
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rm -f *~ *.o *.lst BOOT THE80S LS MY1 MY2 MY3
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BIN
qboot2/SELENETIC.BIN
Normal file
BIN
qboot2/SELENETIC.BIN
Normal file
Binary file not shown.
233
qboot2/boot_sector.s
Normal file
233
qboot2/boot_sector.s
Normal file
@ -0,0 +1,233 @@
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; fast seek/multi-read
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; copyright (c) Peter Ferrie 2015-16
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sectors = 33 ; user-defined
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firsttrk = 3 ; user-defined, first track to read
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firstsec = 0 ; user-defined, first sector to read
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address = $1f ; user-defined
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entry = $1f00 ; user-defined
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version = 1
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;memory usage:
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;256 bytes ($300-3ff) static table
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grouped = $300
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;106 bytes ($200-269) static table
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preshift = $200
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zvalue = $fd ; only during init
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znibble = $fe ; only during init
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zmask = $ff ; only during init
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; $26/$27 sector read location (ROM)
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; $3D sector number (ROM)
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; at entry (at least on AppleWin) A=1, X=60 (slot<<4), Y=0
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; qkumba says cffa cards leave Y at $10
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; 26/27 = 00/09
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; 3D = 1
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; For Disk II booting, the firmware loads track0/sector0
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; to $800 and then jumps to $801
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.org $800
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.byte 1 ; number of sectors for ROM to load
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boot_entry:
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; this code loads two sectors up to $10/$11
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lsr ; check sector number
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tay
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adc #$0f
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sta $27 ; set or update address as needed
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cmp #$12
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; 10 11 12 (1 1 1)
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; be, bf, c0 (1011 1011 1100)
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; so if hit $c000 we are done
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beq done_load_2 ; branch if loaded 2
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inc $3d ; increment sector (faster to find)
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; call to the read routine in proper slot
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; using rts to jump indirect to
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; $CX5C
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; this routine reads sector in $3D on track $41
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; to address in $26/$27
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; when it's done it jumps back to $801
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txa ; x is slot# << 4
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lsr
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lsr
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lsr
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lsr
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ora #$c0 ; slot to PROM base
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pha
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lda #$5b ;read-1
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pha
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rts
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done_load_2:
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; patch self modifying code for Q6L read
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txa
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ora #$8c ; slot to Q6L
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; Q6L?
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; if slot 6, after this A is $EC
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patch_loop:
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iny
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ldx patchtbl-3, Y
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sta code_begin, X ; replace placeholders with Q6L
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; BE02 = EC? lda c0ec
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; so sets to c08c (Q6L)
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bne patch_loop
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; patch self-modifying code for turning motor off
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and #$f8 ; MOTOROFF (c088) -> c0e8
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sta slotpatch7+1
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; patch self-modifying code for turning motor on
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clc
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adc #1 ; MOTOROFF (c088) -> c0e9
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sta slotpatch9+1
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; patch self-modifying code for phase off
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eor #9 ; PHASEOFF (c080)
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sta slotpatch8+1
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ldx #$3f
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stx zmask
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inx
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ldy #$7f
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bne skip_ahead ; branch always
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; pad with zeros until $839
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; $839 is the entry point
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; adjusts address at $8FE to be entry point
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; jumps to boot 2
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;.res $839-*
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; lda #>(entry-1)
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; pha
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; lda #<(entry-1)
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; pha
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; jsr preread
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; jmp $1000 ; stage2 entry point
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patchtbl:
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.byte <(slotpatch1+1), <(slotpatch2+1), <(slotpatch3+1)
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.byte <(slotpatch4+1), <(slotpatch5+1), <(slotpatch6+1)
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indextbl: ;the 0 also terminates the patchtbl list!
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.byte 0, 2, 1, 3
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;construct denibbilisation table
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;pre-shifted for interleave read
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skip_ahead:
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loopaa:
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sty znibble
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tya
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asl
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bit znibble
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beq loopz
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ora znibble
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eor #$ff
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and #$7e
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loopa:
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bcs loopz
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lsr
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bne loopa
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dex
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txa
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asl
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asl
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sta preshift-$16, Y
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loopz:
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dey
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bne loopaa
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;construct 2-bit group table
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sty zvalue
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loopbb:
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lsr zmask
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lsr zmask
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loopb:
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lda indextbl, X
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sta grouped, Y
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inc zvalue
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lda zvalue
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and zmask
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bne loopy
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inx
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txa
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and #3
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tax
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loopy:
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iny
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iny
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iny
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iny
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cpy #3
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bcs loopb
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iny
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cpy #3
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bcc loopbb
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lda #>(entry-1)
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pha
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lda #<(entry-1)
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pha
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jsr preread
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; seek backward support
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; sty startsec+1
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; sta tmpadr+1
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; stx total+1
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jmp seekread
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preread:
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;copy post-read if necessary
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;push post-read address here
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; pla
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; tax
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; pla
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; tay
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; lda #>(postread-1)
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; pha
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; lda #<(postread-1)
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; pha
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; tya
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; pha
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; txa
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; pha
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lda #<(firsttrk*2)
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sta phase+1
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ldx #sectors
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lda #address
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ldy #firstsec
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rts
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end_code:
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.res $8fe-*
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; traditionally, entry point to jump to at end of loading
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; $be01 in this case
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;*=$8fe
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.byte $10, 1
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.include "stage2.s"
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BIN
qboot2/empty.dsk
Normal file
BIN
qboot2/empty.dsk
Normal file
Binary file not shown.
39
qboot2/ls.s
Normal file
39
qboot2/ls.s
Normal file
@ -0,0 +1,39 @@
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SET_GR = $C050
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FULLGR = $C052
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PAGE0 = $C054
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HIRES = $C057
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KEYPRESS = $C000
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KEYRESET = $C010
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landscape:
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bit SET_GR
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bit FULLGR
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bit PAGE0
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bit HIRES
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forever:
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lda KEYPRESS
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bpl forever
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bit KEYRESET
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;============================
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; setup load code
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;============================
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WHICH_LOAD = $80
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lda #2
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sta WHICH_LOAD
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jmp $119A
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.align $100
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.incbin "lsc.hgr"
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BIN
qboot2/lsc.hgr
Normal file
BIN
qboot2/lsc.hgr
Normal file
Binary file not shown.
39
qboot2/my1.s
Normal file
39
qboot2/my1.s
Normal file
@ -0,0 +1,39 @@
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SET_GR = $C050
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FULLGR = $C052
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PAGE0 = $C054
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HIRES = $C057
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KEYPRESS = $C000
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KEYRESET = $C010
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landscape:
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bit SET_GR
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bit FULLGR
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bit PAGE0
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bit HIRES
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forever:
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lda KEYPRESS
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bpl forever
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bit KEYRESET
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;============================
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; setup load code
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;============================
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WHICH_LOAD = $80
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lda #3
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sta WHICH_LOAD
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jmp $119A
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.align $100
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.incbin "MYSTC.BIN"
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39
qboot2/my2.s
Normal file
39
qboot2/my2.s
Normal file
@ -0,0 +1,39 @@
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SET_GR = $C050
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FULLGR = $C052
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PAGE0 = $C054
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HIRES = $C057
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KEYPRESS = $C000
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KEYRESET = $C010
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landscape:
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bit SET_GR
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bit FULLGR
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bit PAGE0
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bit HIRES
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forever:
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lda KEYPRESS
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bpl forever
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bit KEYRESET
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;============================
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; setup load code
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;============================
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WHICH_LOAD = $80
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lda #4
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sta WHICH_LOAD
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jmp $119A
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.align $100
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.incbin "SELENETIC.BIN"
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39
qboot2/my3.s
Normal file
39
qboot2/my3.s
Normal file
@ -0,0 +1,39 @@
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SET_GR = $C050
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FULLGR = $C052
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PAGE0 = $C054
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HIRES = $C057
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|
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KEYPRESS = $C000
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KEYRESET = $C010
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||||
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||||
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landscape:
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||||
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||||
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bit SET_GR
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bit FULLGR
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bit PAGE0
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bit HIRES
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forever:
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lda KEYPRESS
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bpl forever
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||||
|
||||
bit KEYRESET
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||||
|
||||
|
||||
;============================
|
||||
; setup load code
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||||
;============================
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||||
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||||
WHICH_LOAD = $80
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||||
lda #0
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sta WHICH_LOAD
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jmp $119A
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||||
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.align $100
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||||
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.incbin "CHANNELWOODC.BIN"
|
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BIN
qboot2/new_80s.hgr
Normal file
BIN
qboot2/new_80s.hgr
Normal file
Binary file not shown.
341
qboot2/stage2.s
Normal file
341
qboot2/stage2.s
Normal file
@ -0,0 +1,341 @@
|
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; the following lives on sectors $0E and $0D
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; why?
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||||
; request sector 2 and 4, and the interleave is
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||||
|
||||
; beneath apple dos (3-23)
|
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; Physical (firmware) : 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
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; DOS33 mapping : 0, 7, 14, 6, 13, 5, 12, 4, 11, 3, 10, 2, 9, 1, 8, 15
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||||
|
||||
|
||||
; Beneath Apple DOS
|
||||
; p86 (dos reference)
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;
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||||
|
||||
WAIT = $FCA8 ;; delay 1/2(26+27A+5A^2) us
|
||||
|
||||
.org $1000
|
||||
|
||||
code_begin:
|
||||
|
||||
.byte version
|
||||
|
||||
readnib:
|
||||
slotpatch1: ; smc
|
||||
lda $c0d1 ; gets set to C08C (Q6L) read
|
||||
bpl readnib
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||||
rts
|
||||
|
||||
;fill address array for one track
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||||
seekread:
|
||||
sty startsec+1
|
||||
sta tmpadr+1
|
||||
stx total+1
|
||||
|
||||
inittrk:
|
||||
sec
|
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lda #$10
|
||||
sbc startsec+1
|
||||
cmp total+1
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||||
bcs it_skip
|
||||
|
||||
tax
|
||||
|
||||
it_skip:
|
||||
stx partial1
|
||||
stx partial2
|
||||
jsr seek
|
||||
|
||||
startsec:
|
||||
ldy #$d1
|
||||
|
||||
tmpadr:
|
||||
tmpadr_loop:
|
||||
lda #$d1
|
||||
sta addrtbl, y
|
||||
inc tmpadr+1
|
||||
iny
|
||||
dec partial1
|
||||
bne tmpadr_loop
|
||||
|
||||
read:
|
||||
|
||||
outer_read:
|
||||
jsr readnib
|
||||
inner_read:
|
||||
cmp #$d5
|
||||
bne outer_read
|
||||
jsr readnib
|
||||
cmp #$aa
|
||||
bne inner_read
|
||||
tay ; we need Y=#$AA later
|
||||
jsr readnib
|
||||
eor #$ad ; zero A if match
|
||||
beq check_mode
|
||||
|
||||
;if not #$AD, then #$96 is assumed
|
||||
|
||||
ldy #2 ; volume, track, sector
|
||||
another:
|
||||
jsr readnib
|
||||
rol ; set carry
|
||||
sta sector+1
|
||||
jsr readnib
|
||||
and sector+1
|
||||
dey
|
||||
bpl another
|
||||
tay
|
||||
ldx addrtbl, Y ; fetch corresponding address
|
||||
beq read
|
||||
sta sector+1 ; store index for later
|
||||
|
||||
stx adrpatch1+2
|
||||
stx adrpatch8+2
|
||||
stx adrpatch2+2
|
||||
stx adrpatch3+2
|
||||
stx adrpatch5+2
|
||||
stx adrpatch7+2
|
||||
|
||||
inx
|
||||
stx adrpatch9+2
|
||||
dex
|
||||
|
||||
dex
|
||||
stx adrpatch4+2
|
||||
stx adrpatch6+2
|
||||
|
||||
ldy #$fe
|
||||
adrpatch1:
|
||||
loop2:
|
||||
lda $d102, Y
|
||||
pha
|
||||
iny
|
||||
bne loop2
|
||||
|
||||
branch_read:
|
||||
bcs read ; branch always
|
||||
check_mode:
|
||||
cpx #0
|
||||
beq read ; loop if not expecting #$AD
|
||||
|
||||
loop33:
|
||||
sta tmpval+1 ; zero rolling checksum
|
||||
slotpatch2:
|
||||
loop4:
|
||||
ldx $c0d1
|
||||
bpl loop4
|
||||
lda preshift-$96, X
|
||||
adrpatch2:
|
||||
sta $d102, Y ; store 2-bit array
|
||||
|
||||
tmpval:
|
||||
eor #$d1
|
||||
iny
|
||||
bne loop33
|
||||
ldy #$aa
|
||||
slotpatch3:
|
||||
loop5:
|
||||
ldx $c0d1
|
||||
bpl loop5
|
||||
eor preshift-$96, X
|
||||
adrpatch3:
|
||||
ldx $d102, Y ; bit2tbl
|
||||
eor grouped+2, X ; first 86 nibbles use group bits 0-1
|
||||
adrpatch4:
|
||||
sta $d156, y
|
||||
iny
|
||||
bne loop5
|
||||
and #$fc
|
||||
ldy #$aa
|
||||
slotpatch4:
|
||||
loop6:
|
||||
ldx $c0d1
|
||||
bpl loop6
|
||||
eor preshift-$96, X
|
||||
adrpatch5:
|
||||
ldx $d102, Y ; bit2tbl
|
||||
eor grouped+1, X ; second 86 nibbles use group bits 2-3
|
||||
adrpatch6:
|
||||
sta $d1ac, Y
|
||||
iny
|
||||
bne loop6
|
||||
and #$fc
|
||||
ldx #$ac
|
||||
slotpatch5:
|
||||
loop7:
|
||||
ldy $c0d1
|
||||
bpl loop7
|
||||
eor preshift-$96, Y
|
||||
adrpatch7:
|
||||
ldy $d100, X ; bit2tbl
|
||||
eor grouped, Y ; last 84 nibbles use group bits 4-5
|
||||
adrpatch8:
|
||||
sta $d100, x
|
||||
inx
|
||||
bne loop7
|
||||
and #$fc
|
||||
slotpatch6:
|
||||
loop8:
|
||||
ldy $c0d1
|
||||
bpl loop8
|
||||
eor preshift-$96, Y
|
||||
cmp #1 ; carry = !zero
|
||||
ldy #1
|
||||
loop9:
|
||||
pla
|
||||
adrpatch9:
|
||||
sta $d100, Y
|
||||
dey
|
||||
bpl loop9
|
||||
branch_read2:
|
||||
bcs branch_read ; branch if checksum failure
|
||||
sector:
|
||||
ldy #$d1
|
||||
txa
|
||||
sta addrtbl, Y ; zero corresponding address
|
||||
dec total+1
|
||||
dec partial2 ; adjust remaining count (faster than looping over array)
|
||||
sec
|
||||
bne branch_read2 ; read all requested sectors in one track
|
||||
total:
|
||||
ldx #$d1
|
||||
beq driveoff
|
||||
inc phase+1
|
||||
inc phase+1 ; update current track
|
||||
jmp inittrk
|
||||
|
||||
driveoff:
|
||||
slotpatch7:
|
||||
lda $c0d1
|
||||
|
||||
seekret:
|
||||
rts
|
||||
|
||||
seek:
|
||||
lda #0
|
||||
sta step+1
|
||||
copy_cur:
|
||||
curtrk:
|
||||
lda #0
|
||||
sta tmpval+1
|
||||
sec
|
||||
phase:
|
||||
sbc #$d1
|
||||
beq seekret
|
||||
|
||||
; if seek backwards
|
||||
bcs sback
|
||||
|
||||
eor #$ff
|
||||
inc curtrk+1
|
||||
|
||||
bcc ssback
|
||||
sback:
|
||||
adc #$fe
|
||||
dec curtrk+1
|
||||
ssback:
|
||||
cmp step+1
|
||||
bcc loop10
|
||||
step:
|
||||
lda #$d1
|
||||
loop10:
|
||||
cmp #8
|
||||
bcs loop11
|
||||
tay
|
||||
sec
|
||||
loop11:
|
||||
lda curtrk+1
|
||||
ldx step1, Y
|
||||
bne loop12
|
||||
loopmmm:
|
||||
clc
|
||||
lda tmpval+1
|
||||
ldx step2, Y
|
||||
loop12:
|
||||
stx sector+1
|
||||
and #3
|
||||
rol
|
||||
tax
|
||||
slotpatch8:
|
||||
sta $c0d1, X
|
||||
loopmm:
|
||||
ldx #$13
|
||||
loopm:
|
||||
dex
|
||||
bne loopm
|
||||
dec sector+1
|
||||
bne loopmm
|
||||
lsr
|
||||
bcs loopmmm
|
||||
inc step+1
|
||||
bne copy_cur
|
||||
|
||||
step1: .byte 1, $30, $28, $24, $20, $1e, $1d, $1c
|
||||
step2: .byte $70, $2c, $26, $22, $1f, $1e, $1d, $1c
|
||||
addrtbl: .res 16
|
||||
|
||||
partial1: .byte $00
|
||||
partial2: .byte $00
|
||||
code_end:
|
||||
|
||||
|
||||
|
||||
|
||||
WHICH_LOAD = $80
|
||||
|
||||
load_new:
|
||||
|
||||
; enable drive motor
|
||||
|
||||
slotpatch9:
|
||||
lda $c0e9 ; fixme, patch
|
||||
|
||||
; wait 1s
|
||||
|
||||
ldx #6
|
||||
wait_1s:
|
||||
lda #255
|
||||
jsr WAIT
|
||||
dex
|
||||
bne wait_1s
|
||||
|
||||
|
||||
ldx WHICH_LOAD
|
||||
|
||||
; setup return on stack
|
||||
; is value - 1
|
||||
|
||||
lda load_address,X
|
||||
sec
|
||||
sbc #1
|
||||
pha
|
||||
lda #$ff
|
||||
pha
|
||||
|
||||
lda track_array,X
|
||||
asl ; track to start*2
|
||||
sta phase+1
|
||||
|
||||
lda load_address,X ; address to load
|
||||
pha
|
||||
|
||||
lda sector_array,X
|
||||
tay ; sector to start
|
||||
|
||||
lda length_array,X ; length
|
||||
tax
|
||||
|
||||
pla
|
||||
|
||||
jmp seekread
|
||||
|
||||
|
||||
|
||||
load_address:
|
||||
.byte $1f,$1f,$1f,$1f,$1f
|
||||
track_array:
|
||||
.byte 3,8,13,18,23
|
||||
sector_array:
|
||||
.byte 0,0,0,0,0
|
||||
length_array:
|
||||
.byte 33,33,33,33,33
|
||||
|
||||
Loading…
Reference in New Issue
Block a user