102 lines
1.4 KiB
NASM
102 lines
1.4 KiB
NASM
;;fshcmddecode
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;;Decodes all commands.
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;;Inputs:
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;; HL: Cmd String mem loc
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;; DE: Op code mem loc
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;;Output:
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;; Sets (DE) with command op code
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fshcmddecode:
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push hl
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push de
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ld de, fshcmdEXIT
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call strcmp
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ld hl, fshcmdEXITo
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pop de
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call z, bytecpy
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pop hl
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push hl
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push de
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ld de, fshcmdSET
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call strcmp
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ld hl, fshcmdSETo
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pop de
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call z, bytecpy
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pop hl
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push hl
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push de
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ld de, fshcmdCOPY
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call strcmp
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ld hl, fshcmdCOPYo
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pop de
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call z, bytecpy
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pop hl
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push hl
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push de
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ld de, fshcmdMOVE
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call strcmp
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ld hl, fshcmdMOVEo
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pop de
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call z, bytecpy
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pop hl
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push hl
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push de
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ld de, fshcmdVARS
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call strcmp
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ld hl, fshcmdVARSo
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pop de
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call z, bytecpy
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pop hl
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push hl
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push de
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ld de, fshcmdCLS
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call strcmp
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ld hl, fshcmdCLSo
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pop de
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call z, bytecpy
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pop hl
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ret
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;;fshcmdroute
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;;Routes FshCommamds.
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;;Inputs:
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;; HL: Op code mem loc
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;;Outputs:
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;; Jp to loc for cmd func
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fshcmdroute:
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pop bc ;pop the ret loc from stack into bc
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ld de, fshcmdEXITo
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call bytecmp
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jp z, fshcmdEXITf
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ld de, fshcmdSETo
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call bytecmp
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jp z, fshcmdSETf
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ld de, fshcmdCOPYo
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call bytecmp
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jp z, fshcmdCOPYf
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ld de, fshcmdMOVEo
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call bytecmp
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jp z, fshcmdMOVEf
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ld de, fshcmdVARSo
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call bytecmp
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jp z, fshcmdVARSf
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ld de, fshcmdCLSo
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call bytecmp
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jp z, fshcmdCLSf
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push bc ;put ret location back on stack
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ret
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#include "includes/FshCommands/FshCommands.inc"
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