Re: Serial mouse problems with 486! Please help!

Posted on 2022-12-14, 14:47

by

by Martin85

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hope I can use this thread instead of opening a new one. Having some issues with a Genius easymouse on a 386. When the driver is loaded, the mouse can only go left to right and as far as I know the left button works. What could be the problem? On the pcb of the mouse there is nothing that could …

---

Re: Finally a nVidia 6800 NV41 work around so Windows 98 shuts down and system turns off with no weird patch file. For 1

Posted on 2022-12-03, 06:09

by

by Martin85

in Marvin \ Video

in Marvin \ Video

Huh funny thread! Back in the days I used this tricks, but in the opposite way. Was a student with not that much money to spend and wanted a quadro for 3d modelling. So I was searching for a pciex geforce 6800GT revision A1, which I then modded into a fully working quadro by changing the bios on the …

---

Re: Philips Brilliance 15a - model 15a12ta

Posted on 2022-11-28, 20:38

by

by Martin85

in Marvin \ Video

in Marvin \ Video

So if I understand correctly... TTL shoudld be used always, with monochrome or color source? I had some weird stuff going on while testing the system yesterday. But have to check first on other monitors (lcd and crt) before I jump to conclusions.

---

Philips Brilliance 15a - model 15a12ta

Posted on 2022-11-27, 16:10

by

by Martin85

in Marvin \ Video

in Marvin \ Video

Does anybody have a manual for this monitor? It has a switch on the back labeled as S.O.G. and TTL what is it for? Googling around give nothing really... 🤔 As far as I tested the monitor it works ok.

---

Re: 2.5" IDE SSD surprise found in old "for parts" laptop

Posted on 2022-11-25, 21:01

by

by Martin85

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Really nice find! Thumb up!

---

Re: My 286 motherboard collection

Posted on 2022-11-24, 09:48

by

by Martin85

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Good info! I ordered some time ago sime double 2032 holders... I modded one for the 386 with two diodes and a resistor to bring down the voltage closer to 4-5volts... Do you think I could go without this? Maybe only a diode to stop current going into the cells?

---

Re: My 286 motherboard collection

Posted on 2022-11-24, 08:14

by

by Martin85

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

nice big collection, it looks like some1 butchered the socket on the non working last board at the bottom, im curious most of the boards have batteries removed except like 3 that have the green barrel still attached Yup, fresh batteries I soldered in place of the old, desoldered ones. I simply used …

---

Re: No post, boot Amptron PM-8600 - Socket 7

Posted on 2022-11-23, 13:57

by

by Martin85

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes, I have the same problems with SDRAM... everytime it gives a random number 😁 This board is plagued... Do you have L2 cache enabled? Lucky you, mine stopped working...

---

Re: Compact Flash as HD problem

Posted on 2022-11-22, 20:41

by

by Martin85

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

May it be, because DOS sees it as a 2GB HDD, while BIOS is looking for a 8GB? I think you should set it manually in bios as a 2GB drive. Or am I wrong? Feel free to correct me. It happened to me once on a 386, where there is no autodetect function in bios and I had to manually set the value of Cyl, …

---

Re: MAT286 problems / won't start / Gate A20 error - please help with diagnosis

Posted on 2022-11-22, 20:17

by

by Martin85

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Checked... but cannot figure where does pin 22 of the KBC go... The pin of the socket on the back side of the board is a dead end... that means it should be on the top of the board, but also cannot see it go anywhere... Now... or is the path hidden under the socket, or is the PCB a multilayer board, …

---

Re: CMOS external battery

Posted on 2022-11-22, 20:05

by

by Martin85

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Noone? Well I guess I will reply to myself ;) Today I got a manual for a 286 motherboard that I got at home, it states that "an external 6V battery can be connected to...", also today while browsing through youtube, Retrospector used the same double 2032 coin cell battery to power the CMOS chip. I …

---

Re: MAT286 problems / won't start / Gate A20 error - please help with diagnosis

Posted on 2022-11-22, 17:06

by

by Martin85

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have the exact same problem as you had "Gate A20 ERROR, 8042" on a AMD 386SXL25 motherboard. It's battery badly leaked, so I am still in search of eaten via's, but for now everything seems ok. Been searching on the internet how the KBC (intel p8042ahp) and buffer connect (SN7407N) but not a slight …

---

Re: My collection, part 1

Posted on 2022-11-22, 10:39

by

by Martin85

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Next one is the 286_fatty: - CDTek GH286 G2 II motherboard with a 286/16MHz (not sure still about that one, the PCB color is different) - Trident TVGA8900C graphics - UM8388 ide controller - Alps DF354H090F 3,5" floppy drive - Teac FD55GFP 5,25" floppy drive - Goldstar GM16c450 Serial and parallel …

---

Re: My collection, part 1

Posted on 2022-11-22, 10:36

by

by Martin85

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Grzyb wrote on 2022-11-17, 01:27: The 286 with glorious ET4000, and the 386 with poor TVGA9000 ? Ugly 😜 Well the glorious et4000 is quite a problem with some games so I decided not to use it in the 386, but the main reason is I want to build a machine that gets as close as possible to my first pc …

---

Re: No post, boot Amptron PM-8600 - Socket 7

Posted on 2022-11-22, 10:33

by

by Martin85

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

These are reading without the processor mounted... With the processor mounted and set to 2.8V by thw jumpers, i get at the BUZ102 (sipmos power transistor N channel) 5.9 - 4.96 - 2.8

---

Re: No post, boot Amptron PM-8600 - Socket 7

Posted on 2022-11-22, 10:22

by

by Martin85

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Here are my readings, sorry couldn't do it faster... Also borrowed a much more exact multimeter from work... 😉

---

Re: Sandisk CF Card not being fully used?

Posted on 2022-11-19, 19:30

by

by Martin85

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yup, had the same exact problem... As well it was with Win98se, a pentium2, and a hard disk with 20gb. After I wiped everything from the disk, I run fdisk and it was telling me I have only 8gb available. Bios was clearly showing me the whole 20 instead... I guess it was a problem with the boot disk …

---

Re: My collection, part 1

Posted on 2022-11-16, 21:46

by

by Martin85

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

And the last one, for today at least is the 386_40: - J-Bond A340C-H motherboard with a 386/40MHz and 128KB of cache and 8MB of RAM - Quadtel TVGA9000 graphics - Winbond W83757F ide controller - Teac D359TS 3,5" floppy drive - Teac FD55GFR 5,25" floppy drive - Mitsumi CRMC-FX810T CD-ROM 8x - CF to …

---

Re: My collection, part 1

Posted on 2022-11-16, 21:43

by

by Martin85

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Next one is the 286_fatty: - CDTek GH286 G2 II motherboard with a 286/16MHz (not sure still about that one, the PCB color is different) - Trident TVGA8900C graphics - UM8388 ide controller - Alps DF354H090F 3,5" floppy drive - Teac FD55GFP 5,25" floppy drive - Goldstar GM16c450 Serial and parallel …

---

My collection, part 1

Posted on 2022-11-16, 21:39

by

by Martin85

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

So as I promised, I am presenting you the first part of my collection... And good thing I did this today, because I discovered thing I did not know and some corrosion that would in time probably go unnoticed and would ruin another motherboard. So let's start with a mock up... I had this motherboard …

---