Re: What retro activity did you get up to today?

Posted on 2020-07-02, 08:43

by

by bjwil1991

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Trying to figure out the 386 motherboard here. Apparently, the clock won't stay in sync and after a while, it loses the settings. Not sure if the RTC chip is acting strange or if the battery connections are bad.

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Re: What retro activity did you get up to today?

Posted on 2020-07-01, 06:02

by

by bjwil1991

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Did more progress on the 386/486DLC machine. Soldered the wire from the positive terminal (underside of the board) to D2 for the external battery and that worked out well. Tested it to make sure the RTC chip was getting the appropriate voltage and to make sure the settings are saved and everything …

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Re: VOGONS Driver Library

Posted on 2020-07-01, 02:48

by

by bjwil1991

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Uploaded the BIOS for an RTP InterGroup Int'l Ltd. LB386DX (SiS 85C460/461 single-chip) board

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Re: What retro activity did you get up to today?

Posted on 2020-06-30, 09:00

by

by bjwil1991

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Added the 4.3GB HDD and the file system got wiped somehow. The only issue I'm facing is the HDD limit up to 528MB (504MB in DOS language) and to make things not work right, the XT-IDE Universal BIOS I had installed in my 3Com network card was having issues as the drive wasn't detected properly. …

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Re: Bought these (retro) hardware today

Posted on 2020-06-30, 05:32

by

by bjwil1991

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Received the SAAYM card and DIN-5 cables for a 4-port KVS system I ordered (still waiting for the unit to arrive along with the serial cables).

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Re: How about a MR-BIOS ROM file repository?

Posted on 2020-06-30, 05:21

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by bjwil1991

in Marvin \ Software

in Marvin \ Software

Is there a MR-BIOS for the SiS 85C460 (single chip) that is on a 386/486 motherboard? I looked at the spreadsheet on Page 6 that has this information: Filename ------> BIOS string --------> Description V072B400 -----> SIS_400 --------> 460,461V 386,486,Cx

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Re: What retro activity did you get up to today?

Posted on 2020-06-29, 23:33

by

by bjwil1991

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

TechieDude wrote on 2020-06-29, 12:00: What DOS version are you running? Currently running 5.00 on the 203MB Maxtor drive.

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Re: What retro activity did you get up to today?

Posted on 2020-06-29, 08:46

by

by bjwil1991

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Currently working on the 386 system I acquired on Thursday and it works! The biggest con is the hard drive is a bit too tall and when I attempt to install the CD-ROM drive, there's a gap between the floppy drive and CD-ROM drive up front, which isn't good. The system only boots from the hard drive …

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Re: Bought these (retro) hardware today

Posted on 2020-06-28, 09:49

by

by bjwil1991

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Bought a 386 DX-33 (Intel) for my newly acquired 386 for game benchmarks.

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Re: What retro activity did you get up to today?

Posted on 2020-06-28, 09:48

by

by bjwil1991

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Did some work on the LB386DX motherboard (2 EISA, 5 ISA) that has the Cyrix Cx486DLC-33GP by removing the NiCd battery, cleaned off corrosion, and repaired a trace (had connections, but to be safe, I soldered a wire to make the connection stronger in case it was weak). Also soldered on a CR2032 …

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Re: Bought these (retro) hardware today

Posted on 2020-06-28, 04:36

by

by bjwil1991

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

That is one stunning case.

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Re: What retro activity did you get up to today?

Posted on 2020-06-27, 09:27

by

by bjwil1991

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Another bad PB450 that won't start. Chips and components get warm, but the system refuses to power on or get anything on the PC POST card. Might as well look for a working board (there is one on eBay, but I'll ask the seller if it still works before I buy it.

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Re: What retro activity did you get up to today?

Posted on 2020-06-27, 01:15

by

by bjwil1991

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I need to remove rust from the PB450 board above the serial and VGA ports. Might as well do that now.

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Re: Bought these (retro) hardware today

Posted on 2020-06-26, 22:18

by

by bjwil1991

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Nope. Slide in and out. Although, similar design, but if it was the flip top one,that would be so cool.

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Re: Bought these (retro) hardware today

Posted on 2020-06-26, 05:23

by

by bjwil1991

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Dual floppies but no CD-ROM suggests this is probably a 386SX or perhaps a DX-33/DX-40, to me anyway. Took a photo of the innards and it's a 386 board with a Cyrix Cx486DLC-33GP, plus it has a 387 math co-processor. It also has 2 EISA slots and the battery had leaked, but I don't see a lot of …

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Re: Bought these (retro) hardware today

Posted on 2020-06-26, 02:51

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by bjwil1991

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Bought this mystery box today for a damn good price. More pics to follow plus a YouTube video.

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Re: Bought these (retro) hardware today

Posted on 2020-06-25, 16:54

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by bjwil1991

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The one thing I need to figure out is how the AMD CPU is a wee bit close to the side of the PSU. That drives me crazy, but at the same time, that system is really nice.

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Re: Bought these (retro) hardware today

Posted on 2020-06-25, 08:44

by

by bjwil1991

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Bought a SAAYM (2x Philips SAA-1099 chips + Yamaha YM-2151 and YM-3012 Stereo DAC) ISA sound card from TexElec, aka, the CMS/GameBlaster Clone + Yamaha YM-2151 (found in Sharp PCs, Arcade/Pinball, and keyboards of the 1980's). Filename Screenshot_20200625-043948.png File size 934.17 KiB Views 1571 …

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Re: What retro activity did you get up to today?

Posted on 2020-06-25, 04:48

by

by bjwil1991

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

My Socket 7 build was like that and I didn't look to see if the board was completely inserted correctly as the bottom was sticking out like a sore thumb. Did some further progress with the Socket 7 build, but it's still acting weird. It'll either boot to DOS or Windows 98SE then lock up or get stuck …

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Re: What retro activity did you get up to today?

Posted on 2020-06-24, 16:29

by

by bjwil1991

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

My P2B-F does the same thing. Apparently, I heard that caps need to be replaced. I've had it where it'll have 1 long beep repeating and none after that. My POST card gets power, which is good and shows 00-C1 on the display, indicating something's wrong (bad RAM, but all of my RAM sticks work in …

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