mirror of
https://github.com/zellyn/a2audit.git
synced 2024-11-25 18:32:48 +00:00
68 lines
1.7 KiB
NASM
68 lines
1.7 KiB
NASM
;;; Apple II Language Card audit routines
|
|
;;; Copyright © 2016 Zellyn Hunter <zellyn@gmail.com>
|
|
|
|
!zone langcard {
|
|
lda MEMORY
|
|
cmp #49
|
|
bcs +
|
|
+print
|
|
!text "48K:SKIPPING LANGUAGE CARD TEST",$8D
|
|
+printed
|
|
beq .done2
|
|
;; Setup - store differing values in bank first and second banked areas.
|
|
+ lda $C08B ; Read and write First 4K bank
|
|
lda $C08B
|
|
lda #$55
|
|
sta $D17B ; D17B is $53 in Apple II/plus/e/enhanced
|
|
cmp $D17B
|
|
beq +
|
|
+prerr $0003 ;; E0003: We tried to put the language card into read bank 1, write bank 1, but failed to write.
|
|
!text "CANNOT WRITE TO LC BANK 1 RAM"
|
|
+prerred
|
|
beq .done2
|
|
+ sta $FE1F ; FE1F is $60 in Apple II/plus/e/enhanced
|
|
cmp $FE1F
|
|
beq +
|
|
+prerr $0004 ;; E0004: We tried to put the language card into read RAM, write RAM, but failed to write.
|
|
!text "CANNOT WRITE TO LC RAM"
|
|
+prerred
|
|
beq .done
|
|
+ lda $C083 ; Read and write Second 4K bank
|
|
lda $C083
|
|
lda #$AA
|
|
sta $D17B
|
|
cmp $D17B
|
|
beq +
|
|
+prerr $0005 ;; E0005: We tried to put the language card into read bank 2, write bank 2, but failed to write.
|
|
!text "CANNOT WRITE TO LC BANK 2 RAM"
|
|
+prerred
|
|
beq .done
|
|
+ lda $C088 ; RAM read, bank 1
|
|
lda $D17B
|
|
cmp #$55
|
|
beq +++
|
|
cmp #$AA
|
|
bne +
|
|
+prerr $0006 ;; E0006: Read $C088 (read bank 1), but the language card is still reading bank 2.
|
|
!text "$C088: BANK 1 ACTIVE"
|
|
+prerred
|
|
.done2 beq .done
|
|
+ cmp #$53
|
|
bne +
|
|
+prerr $0007 ;; E0007: Read $C088 (read bank 1), but the language card is reading ROM.
|
|
!text "$C088: ROM ACTIVE"
|
|
+prerred
|
|
beq .done
|
|
+ +prerr $0007 ;; E0007: Read $C088 (read bank 1), but the check byte ($D17B) is an unknown value.
|
|
!text "$C088: UNKNOWN BYTE"
|
|
+prerred
|
|
beq .done
|
|
+++
|
|
;; Test
|
|
;; Success
|
|
+print
|
|
!text "LANGUAGE CARD TESTS SUCCEEDED",$8D
|
|
+printed
|
|
.done
|
|
} ;langcard
|