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| author | Jacques Comeaux <jacquesrcomeaux@protonmail.com> | 2024-05-26 14:23:17 -0500 |
|---|---|---|
| committer | Jacques Comeaux <jacquesrcomeaux@protonmail.com> | 2024-05-26 14:23:17 -0500 |
| commit | 50dc62be4128b6c17b4ff42c0440250526a23215 (patch) | |
| tree | 136c7ca76f55f1b6c8604dbde09b2f29b5d2519b | |
| parent | 5bbad5026cb810f61c2466d5c4bf3438ba820842 (diff) | |
Use CMP immediate
| -rw-r--r-- | assembler/register.s | 20 |
1 files changed, 6 insertions, 14 deletions
diff --git a/assembler/register.s b/assembler/register.s index 348d8cf..f8197fd 100644 --- a/assembler/register.s +++ b/assembler/register.s @@ -12,33 +12,26 @@ register: ADDS R4, ('0 + 1) 10: BL get_char - MOVS R1, 'R - CMP R0, R1 + CMP R0, 'R BNE 10b BL uart_send 20: BL get_char - MOVS R1, '0 - CMP R0, R1 + CMP R0, '0 BLO 20b CMP R0, R4 BHI 20b BL uart_send - MOVS R1, '1 - CMP R0, R1 + CMP R0, '1 BNE 30f - MOVS R1, '7 - CMP R4, R1 + CMP R4, '7 BEQ 30f 50: BL get_char - // CMP R0, ' // space is stop char BEQ 60f - MOVS R1, '0 - CMP R0, R1 + CMP R0, '0 BLO 50b - MOVS R1, '5 - CMP R0, R1 + CMP R0, '5 BHI 50b BL uart_send ADDS R0, 10 @@ -47,7 +40,6 @@ register: MOV R4, R0 40: BL get_char - // CMP R0, ' // space is stop char BNE 40b POP {PC} 60: |