Micronics M5Pi System Board Manual
| Beep code | Contents | Description | 
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| None | 01h | CPU register test in progress. | 
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| 02h | CMOS read/write failure. | |
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| 03h | ROM BIOS check failure. | |
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| 04h | Programmable interval timer failure. | |
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| 05h | DMA initialization failure. | |
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| 06h | DMA page register write/read failure. | |
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| 08h | RAM refresh verification failure. | |
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| None | 09h | First 64K RAM test in progress. | 
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| 0Ah | First 64K RAM chip or data line failure  | |
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| 0Bh | First 64K RAM odd/even logic failure. | |
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| 0Ch | Address line failure first 64K RAM. | |
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| 0Dh | Parity failure first 64K RAM. | |
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| 10h | Bit 0 first 64K RAM failure. | |
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| 11h | Bit 1 first 64K RAM failure. | |
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| 12h | Bit 2 first 64K RAM failure. | |
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| 13h | Bit 3 first 64K RAM failure. | |
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| 14h | Bit 4 first 64K RAM failure. | |
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| 15h | Bit 5 first 64K RAM failure. | |
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| 16h | Bit 6 first 64K RAM failure. | |
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| 17h | Bit 7 first 64K RAM failure. | |
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| 18h | Bit 8 first 64K RAM failure. | |
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| 19h | Bit 9 first 64K RAM failure. | |
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| 1Ah | Bit 10 first 64K RAM failure. | |
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| 1Bh | Bit 11 first 64K RAM failure. | |
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| 1Ch | Bit 12 first 64K RAM failure. | |
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| 1Dh | Bit 13 first 64K RAM failure. | |
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