diff options
Diffstat (limited to 'asm/text_mode.atk16')
| -rw-r--r-- | asm/text_mode.atk16 | 27 |
1 files changed, 16 insertions, 11 deletions
diff --git a/asm/text_mode.atk16 b/asm/text_mode.atk16 index 9a57954..54741dc 100644 --- a/asm/text_mode.atk16 +++ b/asm/text_mode.atk16 @@ -9,9 +9,9 @@ @label main cursor_to_line RC 1 - put_string RC RB " HELLO CORECAMP" + put_string RC RB " HELLO #vaincoodijutut" new_line RC - put_string RC RB " »»»»»»» BY JAN" + put_string RC RB " »»»» BY @kal_jan »»»»" new_line RC new_line RC put_string RC RB " > " @@ -22,32 +22,37 @@ jpi loop @label keyboard_isr - stack_stash RA RB + stack_stash RA RB RD ldi vt_kb_pp_addr RA ; RA := Keyboard peripheral address pointer ldr RA RA ; RA := Keyboard peripheral address deref ldr RA RA ; RA := <16-bit keyboard character code> from MMIO register ldi vt_term_pp_addr RB ; RB := Terminal peripheral address pointer ldr RB RB ; RB := Terminal peripheral address deref - mov RA RD + mov RA RD ; RD := character code + subi RD 5 RD ; if code == 10 (enter key), then run newline handler subi RD 5 RD - subi RD 5 RD - bri zero keyboard_isr_clear - mov RA RD + bri zero keyboard_isr_newline + + mov RA RD ; if code == 8 (backspace key), then run backspace handler subi RD 5 RD subi RD 3 RD + bri zero keyboard_isr_backspace - str RA RC + str RA RC ; else code is not special; write it to text buffer addi RC 1 RC jpi keyboard_isr_end -@label keyboard_isr_clear + +@label keyboard_isr_newline new_line RC put_string RC RB " > " - addi RC 1 RC + jpi keyboard_isr_end + @label keyboard_isr_backspace subi RC 1 RC put_char RC RB " " subi RC 1 RC + @label keyboard_isr_end - stack_restore RA RB + stack_restore RA RB RD rti |