| ← 8E09 | Map | 8E63 → |
8E25: Pause control (per-frame)
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Freezes play on the pause key and shows the PAUSED banner.
The freeze is a busy-wait inside the frame chain. The balls, the inhabitants and the sound all hold still until the player resumes.
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Key 1 both pauses and resumes: the first press pauses, the next press resumes.
The banner sits on the bat's side at character row 12, printed double-height in bright yellow on blue. Its column comes from the bat side.
The resume runs in three debounced phases. Spin while key 1 is still held, spin until it is pressed again, then spin while that press is held.
Blanks overprint the banner, with a black-paper attribute over the same cells.
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| handle_pause | 8E25 | CALL poll_pause_key | Poll key 1; with it up, return at once and let the frame run. |
| 8E28 | OR A | ||
| 8E29 | RET Z | ||
| 8E2A | CALL sfx_key_blip | Blip to acknowledge the pause. | |
| 8E2D | LD A,(bat_side) | Read the bat side: 0 selects the right edge, non-zero the left. | |
| 8E30 | OR A | ||
| 8E31 | JR Z,pause_banner_right | ||
| 8E33 | LD HL,SCREEN_BASE+$882 | Bat on the left: banner at column 2, row 12. | |
| 8E36 | JR pause_draw_banner | ||
| pause_banner_right | 8E38 | LD HL,SCREEN_BASE+$896 | Bat on the right: banner at column 22, row 12. |
| pause_draw_banner | 8E3B | PUSH HL | Save the banner address for the later erase. |
| 8E3C | LD DE,msg_paused | Print double-height PAUSED in bright yellow on blue. | |
| 8E3F | LD C,$4E | ||
| 8E41 | CALL print_string_2x | ||
| pause_wait_release | 8E44 | CALL poll_pause_key | Spin while key 1 is held: clear the pause press. |
| 8E47 | OR A | ||
| 8E48 | JR NZ,pause_wait_release | ||
| pause_wait_resume | 8E4A | CALL poll_pause_key | Spin until key 1 is pressed again: the resume press. |
| 8E4D | OR A | ||
| 8E4E | JR Z,pause_wait_resume | ||
| 8E50 | CALL sfx_key_blip | Blip to acknowledge the resume. | |
| 8E53 | POP HL | Recover the banner address. | |
| 8E54 | LD DE,msg_paused_erase | Overprint blanks to erase the banner (bright white ink on black paper). | |
| 8E57 | LD C,$47 | ||
| 8E59 | CALL print_string_2x | ||
| pause_resume_release | 8E5C | CALL poll_pause_key | Spin while key 1 is held: clear the resume press, then return. |
| 8E5F | OR A | ||
| 8E60 | JR NZ,pause_resume_release | ||
| 8E62 | RET | ||
| ← 8E09 | Map | 8E63 → |