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Images of BIOS ROMs for Certain AT Clones


NOTE: Additional images at  http://chukaev.ru54.com/bios_en.htm


BIOS source Motherboard: LM-103S          (CPU: 80L286-16/S soldered)
Supplier modem7 at the Vintage Computer Forums, JUL15
BIOS chip type 27C256       (quantity: 2)
BIOS contains the string "12/15/89"
Motherboard chipset 3 chips by Headland: HT101A/B1A4924, HT102/B1A4000 (qty 2)
Comments 1. Motherboard is marked "LM-103S" between two of the slots and has a "103FS-16" sticker.
2. BIOS consists of a LO chip and a HI chip (low and high)
3. A 12MHz version on eBay had a Quadtel BIOS (labelled: QT-102 V3.05.1) (photo)
Download AMI BIOS for LM-103S motherboard.zip
BIOS chip photo Photo
Motherboard photo Photo           (8 MB)
AMI BIOS ident. D286-1234-121589-K8           (observed by owner at bottom of boot screen)



BIOS source Motherboard: ECS-386/32, by Elitegroup Computer Systems          (CPU: 80386DX-20 inserted)
Supplier modem7 at the Vintage Computer Forums, DEC15
BIOS chip type 27C256       (quantity: 2)
BIOS contains the strings "C&T 386 CHIPSET " and "Date:-03/03/89"
Motherboard chipset 8 chips by Chips & Technologies: P82C206, P82C301C, P82C302C, P82A303, P82A304, P82B305 (qty 2), P82A306A
Comments 1. Motherboard is marked "ECS-386/32"
2. User manual is here
3. From the user manual: "The ECS-386/32 a 80386-based mainboard"
4. From the user manual: "Chips & Technologies CS8230 chip set"
5. BIOS consists of an L chip and an H chip (low and high)
Download AMI BIOS for ECS-386/32.zip
BIOS chip photo Photo
Motherboard photo Photo           (8 MB)
AMI BIOS ident. EC&T-1131-030389-K8           (observed by owner at bottom of boot screen)



BIOS source Motherboard: FU340, by Abit          (CPU: 80386)
Supplier Anonymous Coward at the Vintage Computer Forums, DEC15
BIOS chip type 27C512 ?
BIOS contains the strings "FU340 REV-B PAGE MODE BIOS" and "05/05/91"
Motherboard chipset 3 chips by Chips & Technologies: P82C351, P82C355, P82C356
Comment Total Hardware 99 identifies the maker of 'FU325/FU333/FU340' as Abit
Download AMI BIOS for Abit FU340 motherboard.zip
AMI BIOS ident. 30-400-ZZ1247-00101111-050591-PEAKDM           (found in BIOS code)



BIOS source Motherboard: UM386, by Elitegroup Computer Systems          (CPU: 80386DX-40 inserted)
Supplier modem7 at the Vintage Computer Forums, JUL15
BIOS chip type 27C512       (quantity: 1)
BIOS contains the string "UM386 V1.1 03-06-92"
Motherboard chipset 3 chips by UMC: UM82C206F, UM82C391A, UM82C482AF
Comments 1. Motherboard is marked "UM386 REV 1.1"
2. Total Hardware 99 identifies the maker of 'UM 386' as Elitegroup Computer Systems
Download AMI BIOS for UM386 motherboard of revision 1.1.zip
BIOS chip photo Photo
Motherboard photo Photo           (10 MB)
AMI BIOS ident. 30-0500-D01131-00101111-070791-UMCWB-F           (observed by owner at bottom of boot screen)



BIOS source Motherboard: A433C-C/A450C-C, by J-Bond               (CPU: 80486DX-33 inserted)
Supplier modem7 at the Vintage Computer Forums, JAN16
BIOS chip type 27C512       (quantity: 1)  (actual chip fitted: TMS27C512)
BIOS contains the string "ETEQ 486 Mar. 05, 1992"           (observed on boot screen)
Motherboard chipset 2 chips by ETEQ: ET82C491, ET82C493
1 chip by Chips & Technologies: P82C206
Comments 1. Motherboard is marked "A433C-C/A450C-C  VER:02"
2. Total Hardware 99 identifies the maker of 'JB A450CC ' as J-Bond
Download AMI BIOS for J-Bond A433C-C_A450C-C.zip
BIOS chip photo Photo
Motherboard photo Photo           (12 MB)
AMI BIOS ident. 40-0200-001353-00101111-070791-ETEQ4/1C           (observed by owner at bottom of boot screen)



BIOS source Unknown motherboard               (CPU: 80386DX-40 inserted)
Supplier modem7 at the Vintage Computer Forums, JAN16
BIOS chip type 27C512       (quantity: 1)  (actual chip fitted: M27C512)
BIOS contains the strings "BIOS ID SMIH0107" and "IT9112"           (both observed on boot screen)
Motherboard chipset 2 chips by Forex: FRX36C300, FRX36C402
1 chip by SiS: 85C206
Comment Looking at the 'Total Hardware 99' database, this board is very close to the following boards:
* Make: FOREX COMPUTER COMPANY Model: 386 CACHE SYSTEM BOARD
* Make: FREE COMPUTER TECHNOLOGY INC. Model: CACHE 386 ISA
* Make: INFORMTECH INTERNATIONAL INC. Model: IT386SM-P
* Make: SPRING CIRCLE COMPUTER INC. Model: MDX340C/FOREX386

This appears to be a Forex designed board, licenced to others
Download SMIH0107 BIOS.zip
BIOS chip photo Photo
Motherboard photo Photo           (9 MB)
AMI BIOS ident. 30-0400-428005-00101111-070791-FORX-F           (observed by owner at bottom of boot screen)



BIOS source Everex EV-1806 motherboard
Supplier SomeGuy at the Vintage Computer Forums, MAY17
BIOS chip type 27128       (quantity: 2)
BIOS contains the strings "(C)1987 American Megatrends Inc." and "286-BIOS (C)1987 AMI, for AT PLUS INC"
Comment ROMs labelled 'REV-F1A-21 EVEN' and 'REV-F1A-21 ODD'
Download Everex EV-1806 - BIOS ROM - REV-F1A-21.zip
Motherboard photo Photo



BIOS source Everex EV-1815 motherboard
Supplier SomeGuy at the Vintage Computer Forums, MAY17
BIOS chip type 27128       (quantity: 2)
BIOS contains the strings "Award Software Inc." and "286 Modular BIOS Version 3.03"
Comment  ODD chip in socket U108, and labelled '23C15'
EVEN chip in socket U109, and labelled '23C16'
Download Award 286 Modular BIOS Version 3.03 - BIOS ROM.zip
Comment A later version, 3.03GS, is at here



BIOS source Motherboard: From a Mitac branded 286 clone
Supplier bobba84 at the Vintage Computer Forums, MAY17
BIOS chip type 27256       (quantity: 2)
BIOS contains the strings "MITAC Inc."  and  "(R04)"
"80286 ROM BIOS Version 3.07"  and  "(c) 1985,1986 Phoenix Technologies Ltd"
Download Phoenix 80286 ROM BIOS Version 3.07 (R04).zip
BIOS chip photo Photo



BIOS source Motherboard: From an unbranded AT clone
Supplier bobba84 at the Vintage Computer Forums, MAY17
BIOS chip type 27256       (quantity: 2)
BIOS contains the strings "286-BIOS (C)1989 American Megatrends Inc"  and  "VLSI BIOS, 286 CHIPSET"
Download AMI 286-BIOS ROM - DVL2-1160-040990-K8.zip
BIOS chip photo Photo
AMI BIOS ident. DVL2-1160-040990-K8           (observed by owner at bottom of boot screen)



BIOS source Unknown motherboard
Supplier ldkraemer at the Vintage Computer Forums, MAY17
BIOS contains the string "DTK 286 BIOS Ver 3.18  07/01/88"
Download DTK 286 BIOS Ver 3.18.zip



BIOS source Unknown motherboard
Supplier ldkraemer at the Vintage Computer Forums, MAY17
BIOS contains the string "286-BIOS (C)1990, American Megatrends Inc"
Comment Unable to identify version information from ROM contents
Download AMI 286-BIOS ROM - unknown version - 1.zip
AMI BIOS ident. ???



BIOS source Unknown motherboard
Supplier ldkraemer at the Vintage Computer Forums, MAY17
BIOS contains the strings "386-BIOS (C)1989 American Megatrends Inc"  and  "C&T 386 NON CACHE BIOS, CS8230 CHIPSET"
Comment Unable to identify version information from ROM contents
Download AMI 386-BIOS ROM - CS8230 chipset - unknown version - 1.zip
AMI BIOS ident. ???