BIOS| ア | イ | ウ | エ | オ |
| カ | キ | ク | ケ | コ |
| サ | シ | ス | セ | ソ |
| タ | チ | ツ | テ | ト |
| ナ | ニ | ヌ | ネ | ノ |
| ハ | ヒ | フ | ヘ | ホ |
| マ | ミ | ム | メ | モ |
| ヤ | ユ | ヨ | ||
| ラ | リ | ル | レ | ロ |
| ワ | ヰ | ヴ | ヱ | ヲ |
| ン |
| A | B | C | D | E |
| F | G | H | I | J |
| K | L | M | N | O |
| P | Q | R | S | T |
| U | V | W | X | Y |
| Z | 数字 | 記号 | ||
POST
読み：ピーオウエスティー
外語：POST: Power On Self Test
品詞：名詞
外語：POST: Power On Self Test
品詞：名詞
電子計算機の電源投入時の自己診断機能のこと。
一部の、パーソナルコンピューター用BIOSに搭載されている機能で、ハードウェアに問題があった場合にはBEEP音などで異常を知らせたり画面上にメッセージを表示したりする。
音の鳴り方は、BIOSの設計など仕様に依存するため、メーカーごとに様々である。
IBM製BIOSのエラー時BEEPの種類は、次の通り。
| Beeps | Errant device |
|---|---|
| No beep | Power supply, system board |
| 1 short | System OK |
| 2 short | POST Error displayed on monitor |
| Repeating short | Power supply, system board |
| 3 long | 3270 keyboard card |
| 1 long, 1 short | System board |
| 1 long, 2 short | Display adapter (MDA, CGA) |
| 1 long, 3 short | EGA |
| Continuous | Power supply, system board |
AMI製BIOSのエラー時BEEPの種類は、次の通り。
| Beeps | Failure |
|---|---|
| 1 short | DRAM refresh |
| 2 short | Parity circuit |
| 3 short | Base 64K RAM |
| 4 short | System timer |
| 5 short | Processor |
| 6 short | Keyboard controller Gate A20 error |
| 7 short | Virtual mode exception error |
| 8 short | Display memory R/W test |
| 9 short | ROM BIOS checksum |
| 1 long, 3 short | Non-fatal--Conventional/extended memory |
| 1 long, 8 short | Non-fatal--Display/retrace test |
PHOENIX製BIOSのエラー時BEEPの種類は、次の通り。
| Beeps | Fatal Failures Beep code |
|---|---|
| 1-1-3 | CMOS write/read (or real-time clock read/write) |
| 1-1-4 | ROM BIOS checksum |
| 1-2-1 | Programmable interval timer |
| 1-2-2 | DMA initialization |
| 1-2-3 | DMA page register write/read |
| 1-2-4 | SRAM test and configuration |
| 1-3-1 | RAM refresh verification |
| 1-3-3 | 1st 64kb RAM chip or data line failure, multibit |
| 1-3-4 | First 64K RAM odd/even logic |
| 1-4-1 | Address line failure first 64K RAM |
| 1-4-2 | Parity failure first 64K RAM2-1-1 Bit 0 first 64K RAM |
| 2-1-2 | Bit 1 first 64K RAM |
| 2-1-3 | Bit 2 first 64K RAM |
| 2-1-4 | Bit 3 first 64K RAM |
| 2-2-1 | Bit 4 first 64K RAM |
| 2-2-2 | Bit 5 first 64K RAM |
| 2-2-3 | Bit 6 first 64K RAM |
| 2-2-4 | Bit 7 first 64K RAM |
| 2-3-1 | Bit 8 first 64K RAM |
| 2-3-2 | Bit 9 first 64K RAM |
| 2-3-3 | Bit 10 first 64K RAM |
| 2-3-4 | Bit 11 first 64K RAM |
| 2-4-1 | Bit 12 first 64K RAM |
| 2-4-2 | Bit 13 first 64K RAM |
| 2-4-3 | Bit 14 first 64K RAM |
| 2-4-4 | Bit 15 first 64K RAM |
| 3-1-1 | Slave DMA register |
| 3-1-2 | Master DMA register |
| 3-1-3 | Master interrupt mask register failure |
| 3-1-4 | Slave interrupt mask register failure |
| 3-2-4 | Keyboard controller test failure |
| 3-3-4 | Screen initialization |
| 3-4-1 | Screen retrace |
| 3-4-2 | Search for video ROM in progress (not failure) |
| Beeps | Non-Fatal Failures code |
| 4-2-1 | Timer tick interrupt test (or in progress) |
| 4-2-2 | Shutdown test (or in progress) |
| 4-2-3 | Gate A20 failure |
| 4-2-4 | Unexpected interrupt in protected mode |
| 4-3-1 | RAM test in progress or address failure > FFFFh |
| 4-3-3 | Interval timer Channel 2 (or test) |
| 4-3-4 | Time-of-day clock (or test) |
| 4-4-1 | Serial port (or test) |
| 4-4-2 | Parallel port (or test) |
| 4-4-3 | Math coprocessor (or test) |
| low 1-1-2 | System-board select |
| low 1-1-3 | Extended CMOS RAM |
コメントなどを投稿するフォームは、日本語対応時のみ表示されます
通信用語の基礎知識検索システム WDIC Explorer Version 7.04a (27-May-2022)
