I noticed that PicoGUS has a narrow ISA Bus working frequency range while testing it in a UMC 386DX board. At 33Mhz FSB, the ISA Clk was set: 1/2 - pguinit doesn't recognise it (16mhz) 1/3 - pguinit doesn't recognise it (11mhz) 1/4 - pguinit initialised it (8mhz) and works fine 1/5 - pguinit …

To be clear, the PGA168 TI486SXL-40 mentioned (which compared to your picture does not have the "FC2-" marking), can enable, and I do enable clock double at 33Mhz FSB at 3.6v (not 66mhz FSB), the SXL was rated 40mhz FSB, so enabling clock double in the SXL for me was the only surprise. The specs …

I changed the ISA clock from clk/3 to clk/2 and with regular fan cooling on the TI486SXL-40, boot in MSDOS 6.22, usual startup with himem, and cyrix -e -b -cd then this sequence ran without a reboot or reset at 33mhz*2 (66mhz) Phil's dosbench option: b) Doom timedemo - Timed 2134 gametics in 9156 …

I was able to set clock double to 66mhz and 8k cache using a TI486SXL-40, and the TI486SXL2-50, even the slower variant seem to be stable at standard 3.6v This board has a Kyocera 66mhz oscillator soldered, so I won't be testing at higher clock. Compared to the DRx2 33/66 in this board with 128k …

Board does not post, any jumper configuration which would make it post is progress. I tried those settings where I could identify, no luck so far. The board on Retro Web seems a different revision/layout (clock oscillator only). The board that created this post is mx8310-15pc only, it seems. This …

AdLib GOLD clone is now a reality and Orpheus II status should be updated to released

I have not seen any mention of this yet, so may be new info for some: Analog Devices overview - Personal SoundComm System IIa (PSCS IIa) - https://archive.org/details/AnalogDevices-1822/mode/2up?view=theater Seems to describe this card with AD2101 instead of how Orchid/Cardinal & others implemented …

straight from the ROM, this is the POST string: 40-040B-001301-00101111-040493-OP495SLC TAKEN CORP. - 001301

another one of those boards showed up here, this one is not posting but looks ok apart from missing the clock generator and its jumper settings. Did anyone figure out the jumper configuration for this board, or a manual? https://www.vogons.org/download/file.php?mode=view&id=161570 the clock …

In the start of that thread, that adapter is on a PGA132 CPU. It helps with cache coherency issues on some obscure systems. Evergreen made one, as did Kingston. I found that none of the 8 or so 386 motherboards I tested needed this adapter. Later in the thread, there's another adaptor for a PGA168 …