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| author | Jan Tuomi <jans.tuomi@gmail.com> | 2023-11-04 12:10:40 +0200 |
|---|---|---|
| committer | Jan Tuomi <jans.tuomi@gmail.com> | 2023-11-04 12:10:40 +0200 |
| commit | 066ad25889c143f62a817248f7fbf66490a7f4a3 (patch) | |
| tree | 51f61e012f8095661f40c081ee50e33065f95c9e /asm/text_mode.atk16 | |
| parent | 6b7965facbeb34fd1fc84fff2bdd3d3a0c17e474 (diff) | |
Add backspace support
Diffstat (limited to 'asm/text_mode.atk16')
| -rw-r--r-- | asm/text_mode.atk16 | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/asm/text_mode.atk16 b/asm/text_mode.atk16 index d7cdcec..9a57954 100644 --- a/asm/text_mode.atk16 +++ b/asm/text_mode.atk16 @@ -29,18 +29,25 @@ ldi vt_term_pp_addr RB ; RB := Terminal peripheral address pointer ldr RB RB ; RB := Terminal peripheral address deref + mov RA RD + subi RD 5 RD + subi RD 5 RD + bri zero keyboard_isr_clear + mov RA RD + subi RD 5 RD + subi RD 3 RD + bri zero keyboard_isr_backspace str RA RC addi RC 1 RC - - subi RA 5 RA - subi RA 5 RA - bri zero keyboard_isr_clear jpi keyboard_isr_end @label keyboard_isr_clear - ; cursor_to_line RC 4 - ; put_string RC RB " " new_line RC put_string RC RB " > " + addi RC 1 RC +@label keyboard_isr_backspace + subi RC 1 RC + put_char RC RB " " + subi RC 1 RC @label keyboard_isr_end stack_restore RA RB rti |