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65 lines
1.7 KiB
Plaintext
65 lines
1.7 KiB
Plaintext
;-------------------------------
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; #DOS32
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; construct new bootloader and RWTS for converted DOS 3.2 disks
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;-------------------------------
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!zone {
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lda gIsDOS32
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bne .exit
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lda gIsRDOS13
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beq .exit
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; sector 1
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lda jCallRWTS+2
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sta .cr+1
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sec
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sbc #$06 ; #$B7 or #$37
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ldx #$11 ; #BASEPAGE+1
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ldy #$01
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jsr CopyMemory
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; sectors 2-9
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lda #$12 ; #BASEPAGE+2
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jsr CopyUniversalAnywhere
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lda #$38
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sta $1656 ; #BASEPAGE+6
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jsr PrintByID
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!byte s_rwtswrite
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; If original disk loads boot1 into $B700, Standard Delivery only needs to
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; load boot1+RWTS (into $B700..$BFFF) and transfer control to boot1 at $B700.
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;
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; If original disk loads boot1 into $3700 (and expects the RWTS at $3800),
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; we let Standard Delivery load boot1+RWTS+DOS and patch boot1 here so it
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; doesn't try to call the RWTS itself. Boot1 will exit via the standard
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; relocation routine at $1B03, after which both RWTS and DOS will be
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; in higher memory. This will fail horribly if the relocation routine decides
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; not to relocate (on old Apple II machines with less than 48K), and I have
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; made peace with that.
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lda #$01
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ldx #$38
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jsr compare3
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!byte $20,$93,$37
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bcs + ; passport-test-suite/Bellhop.woz [C=0] matches
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jsr modify1
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!byte $2C
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+
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; sector 0
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ldx #ID_DOS32LO
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.cr lda #$d1 ; set at runtime
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cmp #$3D
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beq +
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ldx #ID_DOS32
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+ jsr ConstructStandardDelivery
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jsr PrintByID
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!byte s_bootwrite
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inc gPatchCount
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.exit
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}
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