I think the Micronics boards that were commonly found in Gateway machines were all made in the USA, and they should also have Micronics chipsets which were designed and manufactured in the USA. The downside is you will be stuck with an OEM Phoenix BIOS.
"Will the highways on the internets become more few?" -Gee Dubya
V'Ger XT|Upgraded AT|Ultimate 386|Super VL/EISA 486|SMP VL/EISA Pentium
Ugh ! ...I have some of those micronics motherboards in Gateway 2000 486 desktop computers.
I hate that bios. I have only been able to get one to work. Those motherboards are very limited.
These VLB motherboards at least have a better bios.
There is supposed to be MR-BIOS available for those Micronics motherboards, but so far none have surfaced.
"Will the highways on the internets become more few?" -Gee Dubya
V'Ger XT|Upgraded AT|Ultimate 386|Super VL/EISA 486|SMP VL/EISA Pentium
wrote:Does anyone know of 30-pin ram made in USA ?
Not sure about SIMM modules, but I remember those "MT" dram chips, saying "Made in USA". Most unreliable DRAM ever made. 😁 Pretty sure they made SIMM modules with those, too.
Okay, What would I need to do to upgrade the cache to 256kb or 512kb ?
What size cache moduals and tag would I need and how many ?
The motherboard manual list that only 128kb and 256kb are supported.
It is a 1992 bios American mega-trends Phoenix.
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4GPV3 486 VESA Motherboard
- BIOS ID string X0-0100-001117-00101111-060692-CTQ596-F
- 8-30 pin SIMM slots (1-128meg FPM DRAM)
- 2-32bit VESA Local Bus slots
- 8-16bit ISA slots
- 64-256k cache support in 8-28pin sockets + 1 TAG RAM sockets
- AMI/Award/MR Bios
- CONTAQ (German) 82C596 A Chipset
- Supports the following cpu's at 25/33/40/50/66MHz
INTEL 80486SX/80486DX/80486DX2, P24C, P24T
CYRIX CX486M6, CX486M7
AMD AM486DX/DX2
- Green PC Connector
- Manufactured by: Atrend Technology Co. Ltd. or VisionEx + CTL corp. 1993
I very strongly recommend you do not touch the cache.
The performance difference between 256kb cache and 512kb of cache on a 486 is very small. Don't risk breaking your system by trying this upgrade.
wrote:I very strongly recommend you do not touch the cache.
The performance difference between 256kb cache and 512kb of cache on a 486 is very small. Don't risk breaking your system by trying this upgrade.
Yes, currently it only has 128kb. I would be okay with it having 256kb.
It doesn't support 512kb cache. The cache sockets are 28-pin, and to get to 512kb you need higher density modules that have 32-pins.
"Will the highways on the internets become more few?" -Gee Dubya
V'Ger XT|Upgraded AT|Ultimate 386|Super VL/EISA 486|SMP VL/EISA Pentium
