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cc65/libsrc/apple2/oserror.s

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;
; Ullrich von Bassewitz, 17.05.2000
;
; int __fastcall__ _osmaperrno (unsigned char oserror);
;
.export __osmaperrno
.include "errno.inc"
__osmaperrno:
ldx #ErrTabSize
: cmp ErrTab-2,x ; Search for the error code
beq :+ ; Jump if found
dex
dex
bne :- ; Next entry
; Code not found, return EUNKNOWN
lda #<EUNKNOWN
ldx #>EUNKNOWN
rts
; Found the code
: lda ErrTab-1,x
ldx #$00 ; High byte always zero
rts
.rodata
ErrTab: .byte $01, ENOSYS ; Invalid MLI function code number
.byte $04, EINVAL ; Incorrect parameter count
.byte $25, ENOMEM ; Interrupt table full
.byte $27, EIO ; I/O error
.byte $28, ENODEV ; No device connected
.byte $2B, EACCES ; Write protected
; .byte $2E, EUNKNOWN ; Disk switched
.byte $2F, ENODEV ; No disk in drive
.byte $40, EINVAL ; Invalid pathname syntax
.byte $42, EMFILE ; Too many files open
.byte $43, EINVAL ; Bad reference number
.byte $44, ENOENT ; Bad pathname
.byte $45, ENOENT ; Volume not mounted
.byte $46, ENOENT ; File not found
.byte $47, EEXIST ; File already exists
.byte $48, ENOSPC ; Disk full
.byte $49, ENOSPC ; Directory full
; .byte $4A, EUNKNOWN ; Incompatible ProDOS version
.byte $4B, EINVAL ; Unsupported storage type
; .byte $4C, EUNKNOWN ; End of file
.byte $4D, ESPIPE ; Position past EOF
.byte $4E, EACCES ; Access denied
.byte $50, EINVAL ; File already open
; .byte $51, EUNKNOWN ; File count bad
.byte $52, ENODEV ; Not a ProDOS disk
.byte $53, ERANGE ; Parameter out of range
.byte $55, EMFILE ; Too many devices mounted
.byte $56, EINVAL ; Bad buffer address
; .byte $57, EUNKNOWN ; Duplicate volume name
; .byte $5A, EUNKNOWN ; Damaged disk free space bit map
ErrTabSize = (* - ErrTab)