| Appendix A |
|
ACER | (1E)Select memory type. | |
AMI | (1E)Global equipment byte set for proper display type. | |
Award | (1E)If EISA NVM checksum is good, execute EISA initialization(EISA BIOS ONLY). Size | |
| system memory. | |
Compaq | (1E)Test keyboard controller. | |
Phoenix&Dell | ||
| test(16 bits). | |
| Error Code - 1F | |
AMI | (1F)Video mode set call for mono/color begins. Mode set call for mono/color OK. | |
| Set EISA mode; If EISA non- volatile memory checksum is good, execute EISA initialization. | |
| If not, execute ISA test an clear EISA mode flag. Test EISA configuration memory | |
Award | integrity(checksum & comm.- unication interface). | |
(1F)Test system memory. | ||
Compaq | (1F)Test 286 protected mode. | |
Phoenix&Dell | ||
ACER | Error Code - 20 | |
(20)Test 128K. | ||
AMI | (20)Memory refresh period 30 micro second test complete. Base 64K memory/address test | |
| started. Address line test to be done next. Video mode set | |
AST | completed. | |
(20)Power up bus board(EISA only). | ||
Award | (20)Enable slot 0;Initialize slot 0(system board).(Check memory size).8259 stuck | |
Compaq | bits test. | |
(20)Test real and extended memory. | ||
Phoenix&Dell | ||
| ||
AMI | Error Code - 21 | |
(21)Address line test passed. Going to do toggle parity. (21)ROM type 27256 verified. Video | ||
| display OK. | |
Award | (21)Enable slots 1 through 15;Initialize slot 1.Test stuck NMI bits (parity I/O | |
| check). | |
Compaq | (21)Init | |
Phoenix&Dell | ||
AMI | Error Code - 22 | |
(22)Toggle parity over. Going for sequential data R/W test on 64K memory. Power | ||
Award | on message display OK. | |
(22)Enable slots 2; Initialize slot 2.Test 8259 working. | ||
Compaq | (22)Init 287 Coprocessor. | |
Phoenix&Dell | ||
| keyboard controller.(Beep)=1- | |
AMI | Error Code - 23 | |
(23)Base 64K sequential data R/W test passed. Going to SET BIOS stack and to do | ||
| any setup before Interrupt vector Init. Any setup before interrupt vector Init about to | |
Award | start. Power on message displayed. | |
(23)Enable slots 3;Initialize slot 3.Test protected mode. | ||
Compaq | (23)Test keyboard and interface. | |
Phoenix&Dell | ||
ACER | Error Code - 24 | |
(24)Test keyboard controller(8042). | ||
AMI | (24)Setup required before vector initialization complete. Interrupt vector initialization about to | |
| begin. | |
Award | (24)Enable slots 4;Initialize slot 4.Size extended memory. | |
Compaq | (24)reset A20 ads set default CPU speed. | |
Phoenix | (24)Set ES segment to register to 4 | |
| CMOS. | |
| Error Code - 25 | |
AMI | (25)Interrupt vector initialization done. Going to read Input port of 9042 for turbo | |
| switch(if any).Going to read I/O port of 8042 for turbo switch(if any). | |
Award | (25)Enable slots 5;Initialize slot 5.Test extended memory. | |
Compaq | (25)Test diskette subsystem. |
Phoenix&Dell (25)[Beep]=none interrupt vector loading
Error Code - 26
(26)I/O port of 8042 is read. Going to initialize global data for turbo switch. Going to initialize global data for turbo switch.
(26)Enable slots 6;Initialize slot 6.Test protected mode exceptions. (26)Test fixed disk subsystem.
(26)Enable A20 line. Verify/Load NVRAM parameters.
Error Code - 27
(27)Global data initialization for turbo switch is over. Any initialization before setting video mode to be done next.
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