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Routines |
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Used by the routines at CheckPause and CheckPauseAndSilence.
Tests the SPACE and CAPS SHIFT keys.
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| ReadPauseKeys | 9EE3 | LD A,$7F | Select the keyboard row with SPACE. | |||||
| 9EE5 | OUT ($FD),A | Put the row on the address lines. | ||||||
| 9EE7 | IN A,($FE) | Read the keyboard. | ||||||
| 9EE9 | AND %00000001 | Keep the bit for SPACE. | ||||||
| 9EEB | RET Z | Return if SPACE is pressed. | ||||||
| 9EEC | LD A,$FE | Select the keyboard row with CAPS SHIFT. | ||||||
| 9EEE | OUT ($FD),A | Put the row on the address lines. | ||||||
| 9EF0 | IN A,($FE) | Read the keyboard. | ||||||
| 9EF2 | AND %00000001 | Keep the bit for CAPS SHIFT. | ||||||
| 9EF4 | RET | Return. | ||||||
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