mirror of
https://github.com/cc65/cc65.git
synced 2024-11-05 23:05:24 +00:00
47 lines
850 B
ArmAsm
47 lines
850 B
ArmAsm
;
|
|
; Oliver Schmidt, 08.03.2004
|
|
;
|
|
; Identify DOS version we're running on as one of these:
|
|
;
|
|
; AppleDOS 3.3 $00
|
|
; ProDOS 1.0.1 $10
|
|
; ProDOS 1.0.2 $10
|
|
; ProDOS 1.1.1 $11
|
|
; ProDOS 1.2 $12
|
|
; ProDOS 1.3 $13
|
|
; ProDOS 1.4 $14
|
|
; ProDOS 1.5 $15
|
|
; ProDOS 1.6 $16
|
|
; ProDOS 1.7 $17
|
|
; ProDOS 1.8 $18
|
|
; ProDOS 1.9 $18
|
|
; ProDOS 2.0.1 $21
|
|
; ProDOS 2.0.2 $22
|
|
; ProDOS 2.0.3 $23
|
|
|
|
|
|
.constructor initdostype
|
|
.export __dos_type
|
|
|
|
.include "apple2.inc"
|
|
|
|
; Identify DOS version according to:
|
|
; - "Beneath Apple ProDOS", chapter 6-63
|
|
; - "Apple II ProDOS 8 TechNote #023: ProDOS 8 Changes and Minutia"
|
|
; - ProDOS TechRefMan, chapter 5.2.4
|
|
|
|
initdostype:
|
|
lda MLI
|
|
cmp #$4C ; Is MLI present? (JMP opcode)
|
|
bne done
|
|
lda $BFFF ; ProDOS KVERSION
|
|
cmp #$10
|
|
bpl L1
|
|
ora #$10 ; Make high nibble match major version
|
|
L1: sta __dos_type
|
|
done: rts
|
|
|
|
.bss
|
|
|
|
__dos_type: .res 1
|