PC Hoarder Patrol wrote on 2023-12-30, 21:04:Hopefully this guide by Gateway guru, Ben Myers, should give you the info you need. I've also attached the latest BIOS for the […]
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vintageGuy81 wrote on 2023-12-30, 12:31:Hello All, […]
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Hello All,
I had to replace the motherboard in an old Gateway 4SX-25 that has seen better days. I was lucky enough to find a board out of a 4DX2-50. It has the ISA/PCI Riser, and thanks to this link:
https://www.reddit.com/r/retrobattlestations/ … _ram_will_that/
I was able to determine that the board is an Anigma LP4IP1. Does anyone know where I can find the CPU jumper settings? Using multiple combinations, I was able to get the machine to show a 486 DX2 66 at one point, but the CPU is a 486 DX2-50. Seemingly all other jumper combinations resulted in this:
CPU = ??? ???
If I have to I'll whittle away the combinations until I find the right one, but it will take a bit of time. Thanks!
Hopefully this guide by Gateway guru, Ben Myers, should give you the info you need. I've also attached the latest BIOS for the board (Phoenix v4.04.9) in case you don't have it. Will also pass these onto The Retro Web team shortly.
Gateway LP4IP1 (MBDPCI004AxWW) Guide.pdf
lp4049.exe
THANK YOU! I was two jumpers off. I was able to get it to show "486 DX2 50 Mhz" ONCE. On a power cycle, it returned to the "??? ??? Mhz" display for the CPU. After playing around a little, I've confirmed that the CPU will be identified correctly one time IF and ONLY IF the CMOS is discharged. The Dallas RTC's battery is toast, so I have an external holder with 3 AAs totaling 4.5V. When that block is connected to the external battery pins and you restart, or if you connect the battery block first then turn the machine on, the CPU won't be identified properly. It's WEIRD. I'm wondering if the AAs are discharged and not able to support the RTC.
Last thing I noticed, when the CPU isn't correctly identified, the machine will go as far as counting the RAM, then it will freeze. Given how older boards behave with low batteries, I'll try switching out the batteries tomorrow and see if the behavior changes.
Oh, and my bios is 4.04.9 already, but will download the file happily and keep it in case. If there is some way I can repay the kindness please let me know. Thanks for the "goodies"!