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Code Issues Releases Wiki Activity

use the zero flag to signal success

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This commit is contained in:
Valentin Lenhart 2019-11-04 19:04:01 +01:00
parent 5a826de1ee
commit 9f23d7a79c
4 changed files with 5 additions and 7 deletions
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3
apps/at28w/main.asm
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@ -14,8 +14,7 @@ at28wMain:
ld de, .argspecs
ld ix, AT28W_MAXBYTES
call parseArgs
cp 0xff
jr nz, at28wInner
jr z, at28wInner
; bad args
ld a, SHELL_ERR_BAD_ARGS
ret

3
apps/zasm/main.asm
View File

@ -27,8 +27,7 @@ zasmMain:
ld de, .argspecs
ld ix, ZASM_RAMSTART
call parseArgs
cp 0xff
jr nz, .goodargs
jr z, .goodargs
; bad args
ld hl, 0
ld de, 0

3
kernel/parse.asm
View File

@ -163,9 +163,10 @@ parseArgs:
.success:
ld a, PARSE_ARG_MAXCOUNT
sbc a, b
cp a ; set z to signal success
jr .end
.error:
ld a, 0xff
ld a, 1
.end:
pop ix
pop hl

3
kernel/shell.asm
View File

@ -155,8 +155,7 @@ shellParse:
; We're ready to parse args
ld ix, SHELL_CMD_ARGS
call parseArgs
cp 0xff
jr z, .parseerror
jr nz, .parseerror
; Args parsed, now we can load the routine address and call it.
ld b, a ; pass number of arguments as b