Hi guys!. I need jumper setting for PC-Chips M919 V3.4B/F UMC 486. I just found this one http://www.rainbow-software.org/manuals/m919.html, but the jP12 has a another setting (A or B 1-3).
Retro rig 1: Asus CUV4X, VIA c3 800, Voodoo Banshee (Diamond fusion) and SB32 ct3670.
Retro rig 2: Intel DX2 66, SB16 Ct1740 and Cirrus Logic VLB.
All the manuals for this board are tough to understand. The board jumper layout is the most complex I have ever seen.
That said, just let us know what you are trying to set up. What CPU? What speed?
Cheers
I tried with a amd 586 133. Dont beep from speaker or show any video from ISA or pci cards.
Retro rig 1: Asus CUV4X, VIA c3 800, Voodoo Banshee (Diamond fusion) and SB32 ct3670.
Retro rig 2: Intel DX2 66, SB16 Ct1740 and Cirrus Logic VLB.
I'm using an AMD 5x86-133 in an M919 Rev. 3.4 as well and had no problems setting the jumpers correctly. Can you please make a picture of JP12 on your board?
Guys, sorry for reviving old thread but I think it is more appropriate than creating similar new one... I found this same board with ST 486DX4 CPU but as I have P75 in other PC I would like to put slower 486 into this board (you know it - Ultima 7 and so on). Accordind to link from first post it looks it is possible to use 486DX CPUs. Unfortunately I am not very skilled it "advanced jumpering" (I had Amiga in 90s) 🙁 Can I use 486DX33? According to scheme, only multipliers available are 2, 3 and 4. On the other hand, there is writtent that multiplier jumper is only for DX4, X5 and 5x86 cpus... And closed jumper setting is for x2 AND 24 setting! Now I have DX4 which mean x3. What would happend if I close jumper? Will it be x2 or x4? I think I am totally lost 😁 Probably tha is for what is all the other jumpers used... Sorry for my confusion 😀
I am not sure what this means: Processor Speed - 25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/ 100(internal)/ 120(internal)/133MHz
What is the difference between internal and non-internal speed?
But my most important question is - what is the slowest CPU I can use and what setting should I use?
Thanks a lot!
External is the bus speed. For example 66 internal is a dx2-66 which is 33x2
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Thanks, also I am not sure what is (SL) in CPU jumper table. Jumpers are set to (SL)SGS486DX4 currently. Is it power saving feature? CPU is 3.45V
