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Routines |
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Used by the routine at SaveGame.
Verifies a block just saved, using LD_BYTES with carry clear. A tape error prints "tape error - hit any key to continue" and waits for a key.
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Verify block.
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| VerifyBlock | 855A | CALL $0556 | Call LD_BYTES. | |
| 855D | RET C | Return if the block verified (carry set). | ||
| 855E | LD A,$01 | Write 01 to WaitCountdown. | ||
| 8560 | LD ($B701),A | |||
| 8563 | LD HL,$B381 | Point at the message "tape error - hit any key to continue[0x15]" (B381). | ||
| 8566 | CALL PrintMessage | Call PrintMessage to print message. | ||
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This is the same key wait as Normal_AnyKey.
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| VerifyBlock_WaitForKey | 8569 | XOR A | Read from the keyboard port. | |
| 856A | IN A,($FE) | |||
| 856C | AND %00011111 | Keep bits 0-4, one for each key in the half-row. XOR A then IN A,(FE) reads every half-row at once, and a pressed key reads as a reset bit. | ||
| 856E | CP $1F | Loop back to VerifyBlock_WaitForKey until any key has been pressed. | ||
| 8570 | JR Z,VerifyBlock_WaitForKey | |||
| 8572 | POP DE | Jump back to SaveGame_Done to dispatch a control. | ||
| 8573 | JP SaveGame_Done | |||
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