mirror of
https://github.com/zellyn/a2audit.git
synced 2024-11-22 13:33:35 +00:00
108 lines
1.6 KiB
NASM
108 lines
1.6 KiB
NASM
;;; Apple II audit routines
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;;; Copyright © 2016 Zellyn Hunter <zellyn@gmail.com>
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!convtab <apple ii/convtab.bin>
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!to "audit.o", plain
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* = $6000
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HOME = $FC58
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COUT = $FDED
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PRBYTE = $FDDA
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main:
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jsr HOME
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jsr print
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!text "APPLE II AUDIT",$8D,0
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jsr print
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!text "DETECTING MACHINE VERSION...",$8D,0
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!zone detect {
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jsr IDENTIFY
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lda $C082 ; Put ROM back in place.
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lda MACHINE
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jsr PRBYTE
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lda #$8D
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jsr COUT
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lda MACHINE
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bne .known
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;; MACHINE=0 - unknown machine
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jsr print
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!text "UNABLE TO IDENTIFY",$8D,0
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jmp end
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.known
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cmp #IIeCard
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bcc .leiic
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bne .gs
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;IIeCard
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jsr print
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!text "IIE EMULATION CARD",0
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beq .notsupported
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.gs ;PLUGH
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jsr print
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!text "APPLE IIGS",0
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.notsupported
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jsr print
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!text " NOT SUPPORTED",$8D,0
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jmp end
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.leiic
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cmp #IIe
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bcc .leiii
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beq .iie
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;IIc
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jsr print
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!text "IIC",0
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beq .notsupported
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.iie
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jsr print
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!text "APPLE IIE",0
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lda ROMLEVEL
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cmp #1
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beq +
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jsr print
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!text " (ENHANCED)",0
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+ lda #$8D
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jsr COUT
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beq .done
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.leiii
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cmp #IIplus
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bcc .iiplain
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beq .iiplus
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;iiiem
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jsr print
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!text "APPLE III IN EMULATION MODE",0
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beq .notsupported
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.iiplain
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jsr print
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!text "PLAIN APPLE II",$8D,0
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beq .done
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.iiplus
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jsr print
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!text "APPLE II PLUS",$8D,0
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.done
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} ;detect
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end: jmp *
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;;; print prints a null-terminated string from the address after the
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;;; JSR that called it, returning to the address following the null.
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print:
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pla
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sta getch+1
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pla
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sta getch+2
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- inc getch+1
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bne getch
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inc getch+2
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getch lda $FEED ; $FEED gets modified
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beq +
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jsr COUT
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jmp -
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+ lda getch+2
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pha
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lda getch+1
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pha
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lda #0 ; so we can always beq after print-ing
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rts
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!src "technote2.asm"
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