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ATI VGA Wonder XL24 stuck at 640x480

Posted on 2021-10-17, 01:17

in Marvin \ Video

in Marvin \ Video

I picked up an ATI VGA Wonder XL24. I have used the VINSTALL utility to try and set the monitor type, but the adapter refuses to set any modes above 640x480. When using VINSTALL to try and do diagnostics 640x480 is the highest resolution available. I have also tried to set custom resolutions and it …

Re: ATI Small Wonder technical info

Posted on 2021-09-29, 00:08

in Marvin \ Video

in Marvin \ Video

Years ago as part of GRAFIX the Tandy 1000 graphics and sound package I created. I wrote a BIOS support TSR called Tandy11 for the Tandy 1000/SL/SL2/TL/TL2/TL3/RL 640x200x16 color graphics mode and it included video mode set and character output routines. I might be able to adapt that for the ATI …

Re: ATI Small Wonder technical info

Posted on 2021-09-28, 15:52

in Marvin \ Video

in Marvin \ Video

Thanks to everyone for pointing me in the right direction:)

ATI Small Wonder technical info

Posted on 2021-09-28, 02:44

in Marvin \ Video

in Marvin \ Video

I acquired an ATI Small Wonder revision 1 video card. I was able to find the owners manual and software diskette. I am looking for technical info on programming the 640x200x16 color graphics mode and the Plantronics ColorPlus 320x200x16 graphics mode. Are there any good resources out there on this …

Re: RTC not updating date & time when computer is turned off

Posted on 2021-09-15, 02:14

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I removed the coin cell battery and rigged up an external 4.5v battery today. The time is now updating normally with the computer turned off. I am just relieved to know that there is no damage to the motherboard as far as the RTC is concerned.

Re: 486DLC/TI486SXL interposer board for cache coherency

Posted on 2021-09-14, 15:52

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I noticed how fragile the pins were and decided to removed the interposer. I just enabled the FLUSH input and the 486DLC works fine on it's own. I am just going to hold onto the interposer for now.

Re: 486DLC/TI486SXL sandwich board for cache coherency

Posted on 2021-09-13, 17:49

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

BitWrangler wrote on 2021-09-13, 16:33: Interposer is probably the term that would get more recognition. Thanks , I updated my post accordingly.

486DLC/TI486SXL interposer board for cache coherency

Posted on 2021-09-13, 15:10

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I picked up a TI486SXL/40 CPU and it came with an interposer board. I suspected it was for cache coherency. I did not use the board, because motherboard I used already had support for a TI486SXL/40. I just did a build with a CH-386-33A/40A motherboard with an Opti 82C391B chipset and 128KB cache. I …

Re: RTC not updating date & time when computer is turned off

Posted on 2021-09-12, 00:06

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I did a little more research and there are LIR 2032/H batteries that are 3.6/3.7 volt. They are also rechargeable. I wonder if that could be a workable solutions as well? Only use NiCD batteries! But this only viable if you use (and thus recharge the battery) the computer at least a few hours daily …

Re: RTC not updating date & time when computer is turned off

Posted on 2021-09-11, 23:21

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Seems the 32,768Hz oscillator needs more than 3V to run. Have seen this quite often. These boards with the barrel battery were supposed to be regularly turned on, charging the battery. And the NiCd characteristics is that the voltage only drops sharply when near to empty. So, back then there was no …

Re: RTC not updating date & time when computer is turned off

Posted on 2021-09-11, 22:20

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If it had mTCPs NTP application running from the autoexec.bat file on start up I wouldn't worry about it. I added MTCP to my AUTOEXEC as suggested and it works just fine. I load the 3C5X9PD packet driver, set the time and then unload the packet driver from memory. This turns out to be a quick and …

Re: RTC not updating date & time when computer is turned off

Posted on 2021-09-11, 17:03

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I would try the external 4.5v first, that would rule out a board issue if it works. A rare few old boards had a 4.5v rechargeable not the 3.7v. Trying the 4.5v external will help find out as those boards needed 6v external (more diodes from the external pins to actual cmos battery traces). A 3.6v …

Re: RTC not updating date & time when computer is turned off

Posted on 2021-09-11, 16:38

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

What voltage was the old Varta ? Many of the old 286, 386 used a 4.5v external if the 3.7v Varta was removed. The CR2032 may not be supplying enough voltage..... The CR2032 was already installed when I got the board, so I don't know the previous voltage. My next best option is to rig up an external …

RTC not updating date & time when computer is turned off

Posted on 2021-09-11, 16:27

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I just got a Chicony 386/40 CH-386-33A/40A motherboard for a new system build. The motherboard was upgraded with CR2032 coin cell battery holder. The CMOS settings are retained, but when powered off the computer the date and time will not update. I replaced the CR2032 with a known working battery. I …

Re: Samsung SC-148F 48x CDROM firmware update

Posted on 2021-09-06, 03:48

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I tried a little bit different searching method and found it on kbench.com. Weird that I used sc-148f_ps07 and finally found it. https://kbench.com/software/?q=node/1240

Samsung SC-148F 48x CDROM firmware update

Posted on 2021-09-06, 00:49

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I am looking for the PS07 version of the firmware, but I have been unable to locate a download link. I had no luck using archive.org. The file name is SC-148F_PS07.zip. Any help locating this would be appreciated. Thanks!

Re: TI486SXL-40 PGA168 motherboard compatibilty

Posted on 2021-09-03, 01:33

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

debs3759 wrote on 2021-09-02, 20:53: A number of us have been trying to find a board to run the SXL processors. Good luck trying to figure it out. This motherboard appears to support it in any regard: https://stason.org/TULARC/pc/motherboards/M/M … 486-LX30WB.html

TI486SXL-40 PGA168 motherboard compatibilty

Posted on 2021-09-02, 03:07

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have this CPU and both a LS-486E Rev C1 and Rev F motherboards. Will this CPU work with either of these motherboards? If so, what CPU type should the board be set for?

MoSYS MDRAM chips to upgrade an ET6000 for sale

Posted on 2021-08-12, 02:01

in Marvin \ Video

in Marvin \ Video

I found this listing on eBay for MoSYS MDRAM chips. I am picking up 2 for one my ET6000 cards to upgrade it to 4MB. At $7.80 each that is a pretty decent price. Just thought I would pass this along. https://www.ebay.com/itm/372426829536

Re: Atx form cards

Posted on 2021-08-05, 02:34

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I found this online at CablesOnline for only $7.99. I ordered one and will see if it works. http://www.cablesonline.com/usbatxforcar.html I just tried the one I purchased from CablesOnline.com and it works. Nice to know there is an $8 solution for those who need one. I also tested one in my Asus …

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