a2audit/audit/audit.asm
2016-12-08 16:44:38 -05:00

100 lines
1.5 KiB
NASM

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