TYAN TITAN TURBO PLUS ATX, Руководство пользователя

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65
SYSTEM
POST Codes
Code
Name
Description
C0
Turn Off Chipset Cache
OEM Specific: Controls cache.
1
Processor Test 1
Processor Status (1FLAGS) Verification. Tests the following processor status flags: carry, zero, sign, overflow. The BIOS sets each flag, verifies that it is set, then turns each flag off and verifies that it is off.
2
Processor Test 2
Reads/Writes/Verifies all CPU registers except SS, SP, and BP with data pattern FF and 00.
3
Initialize Chips
Disables NMI, PIE, AIE, UEI, and SQWV, video, parity checking, and DMA. Resets math co-processor. Clears all page registers and CMOS shutdown byte. Initializes timer 0, 1, and 2, and sets EISA timer to a known state. Initializes DMA controllers 0 and 1. Initializes interrupt controllers 0 and 1. Initializes EISA extended registers.
4
T
est Memory Refresh Toggle
RAM must be periodically refreshed to keep the memory from decaying. This function assures that the memory refresh function is working properly.
5
Blank Video, Initialize
Initializes keyboard controller.
Keyboard
6
Reserved
-
7
T
est CMOS Interface and
Verifies that CMOS is working correctly, detects bad battery.
Battery Status BE
Chipset Default Initialization
Program chipset registers with power-on BIOS defaults.
C1
Memory Presence Test
OEM Specific: Tests to size onboard memory.
C5
Early Shadow
OEM Specific: Early Shadow enabled for fast boot.
C6
Cache Presence Test
Detects external cache size.
8
Setup Low Memory
Initializes chipset early. Tests for presence of memory. Runs OEM chipset routines. Clears low 64KB of memory. Tests first 64KB of memory.