TD6NF 1.00
ICS9159M-14

VS440FX
ICS9169M-01

LuckyStar 5VP3 Rev. 2.1
ICS 9148BF-04

i need data of mx8310 clockgen, has anyone seen it?

GMB-486UNP
AV9107-03CN14

Aopen/Acer AP43
IMI SC464AYB

Jamicon KM-T5-T1 REV:1.31
ICS 9169CJ-27

GCT-MGX Rev 2.2A
ICS9159CM-14

I have a DFI 586 ITOX board with the ICS 9169CJ-27, it boots with the test setting. Unfortunately, the keyboard controller relies on the 24MHz signal. With the test setting this becomes REF/4 which is as low as 3,57Mhz. That signal os unfortunately not suitable for keyboard operation, so it stops working.

Does anyone have a workaround for this? If keyboard stops working then its really not a useful setting.

Hello everybody,

my name is Jarek, I'm new on Vogons and I have some piece of information that I'd like to share with you and preserve it for posterity 😉

MX8310-15PC is the subject.

I have been looking for a clock generator chip for which also the datasheet would be available and as it turns out it's not that easy. However, I just happen to have this no-name 486 motherboard that utilizes MX8310-15PC and I was lucky to buy a lot of 10pcs on Aliexpress for darn cheap! Implementation on the mentioned motherboard is looking very similiar to the MX8315 for which I could find the datasheet, so I thought it wouldn't be so hard to reverse-engineer it.

Below are pictures of the mentioned motherboard, my test circuit as well as the schematic drawn from the motherboard and measured by me clock frequency settings. I also attached datasheet of the MX8315. Enjoy! 😀

lazibayer wrote on 2018-04-20, 15:56:

Aopen/Acer AP43
IMI SC464AYB

Do you happen to have the datasheet for this clock generator? I was unable to find it online.

feipoa wrote on 2022-08-30, 10:13:

lazibayer wrote on 2018-04-20, 15:56:

Aopen/Acer AP43
IMI SC464AYB

Do you happen to have the datasheet for this clock generator? I was unable to find it online.

SC464 is easy to find

Roman555 wrote on 2022-08-30, 10:27:

feipoa wrote on 2022-08-30, 10:13:

lazibayer wrote on 2018-04-20, 15:56:

Aopen/Acer AP43
IMI SC464AYB

Do you happen to have the datasheet for this clock generator? I was unable to find it online.

SC464 is easy to find

Much appreciated. I struck out with my DuckDuckGo search. Perhaps I should use google again. haha

feipoa wrote on 2022-08-30, 10:30:

Roman555 wrote on 2022-08-30, 10:27:

SC464 is easy to find

Much appreciated. I struck out with my DuckDuckGo search. Perhaps I should use google again. haha

Welcome.
Or just to use sites something like datasheetarchive and their embedded site-search engine.
But google is convenient though

Compaq Desert Storm
W148H (I didn't find a datasheet, but the jumper settings closely resemble the ICS 9148BF-04 above - I wonder if the 83.3MHz bus/41.65MHz PCI option exists, even though it probably won't POST)
https://theretroweb.com/motherboard/manual/co … 52010720463.pdf

Gateway Anigma 586 (Lawman)
SC652EYB (motherboard only has one jumper for 60MHz/66MHz, but there are solder pads you could ground for the other two options)

DFI K6BV3+/66 REV: B1
W83194R-58A
By jumper:

By software:

lazibayer wrote on 2015-01-24, 06:08:

GA-586TX3 Rev. 1.08 Clock generator: SC652EYB Boring. Screen Shot 2015-01-24 at 1.06.42 AM.png […]
Show full quote

GA-586TX3 Rev. 1.08
Clock generator: SC652EYB
Boring.
Screen Shot 2015-01-24 at 1.06.42 AM.png

Yah, real boring, boo, just found this clockgen on MS-5156 "TX4" board was hoping it had 83 on but nope. That 55 gives you a slightly lower gear but guess it's only interesting to those with the weird early Cyrix or K5 to run it at "proper" 55mhz speed. Oddly board looked like it had 3 bit clock setting so not sure what that other jumper is now, unless it was BF2, that just wasn't moved for all the example CPUs in manual.

Has a second buffered ref clock on 14.xx Mhz, tempting to hook into that for CPU clk see what happens.

and thanks for this effort by the way, I've been looking all afternoon for something like this, searching wrong things I guess, only finally came up, on page after data sheets when I had SC652 in on google, I was trying for clock gen and clock chip here which didn't get it.

Edit: btw, saw something elsewhere about running low low bus frequencies, and poster claimed only a Rage XL worked to POST and boot. (Probably not one of the cheap modern re-mans that have been around recently, but a vintage-ish one) ... ... ... another point bugging me is how "no boot" is deterimined when these clock gens are known to not deliver the i/o chip 24mhz the floppy controller relies on, and instead do ref/4 or something. Seems to me that yeah, that's defo gonna kill floppy boot, unless possibly all in one controller card with own reference crystal and BIOS is used maybe. buuut, ATA may still be functional to boot a hard disk. ... anyhoo, wondering if some boards might actually be observed to boot on low clocks if tried with Rage XL/XC cards and a hard drive (and also avoiding USB peripherals)

lazibayer wrote on 2018-02-19, 03:44:

PcChips M558
CY2265PVC-1

Why is 83MHz listed as a possible clock but then there's no way to actually use it? Or is it?

Full datasheet here.

Great thread by the way! 👏

This clock generator can also be found on the M550.

tauro wrote on 2023-08-31, 18:46:

[img=https://www.vogons.org/thumbs/29958_5ad364cd23df1e3986b57c1623c990a2/Screen%20Shot%202018-02-18%20at%2010.00.07%20PM.png] […]
Show full quote

lazibayer wrote on 2018-02-19, 03:44:

PcChips M558
CY2265PVC-1

cy2265.83mhz.png

Why is 83MHz listed as a possible clock but then there's no way to actually use it? Or is it?

Full datasheet here.

Great thread by the way! 👏

This clock generator can also be found on the M550.

Maybe 011 or 111?

Sphere478 wrote on 2023-08-31, 18:52:

tauro wrote on 2023-08-31, 18:46:

[img=https://www.vogons.org/thumbs/29958_5ad364cd23df1e3986b57c1623c990a2/Screen%20Shot%202018-02-18%20at%2010.00.07%20PM.png] […]
Show full quote

lazibayer wrote on 2018-02-19, 03:44:

PcChips M558
CY2265PVC-1

cy2265.83mhz.png

Why is 83MHz listed as a possible clock but then there's no way to actually use it? Or is it?

Full datasheet here.

Great thread by the way! 👏

This clock generator can also be found on the M550.

Maybe 011 or 111?

I just tried all jumper combinations

011 = no boot.
111 = 7.14 MHz CPUCLK! System boots (after a long while), but it's too darn slow. The keyboard doesn't work.
000 = works, as the datasheet states, 33MHz CPUCLK. Useful to make it crawl for older software.

With little tweaking P55C @66MHz L1D L2D
NSSI 5281, Sysinfo 10.3, Speedsys 6.60

So I wonder what they were thinking when they wrote "up to 83.33MHz" when the true max clock is 75MHz.