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Fwiw, I have a late model (rev C BIOS) Compaq Portable with 640k of RAM on board. It has 256Kx1 DRAMs in banks 2 and 3, and 64Kx1 in banks 0 and 1. There is a 74S288 PROM in socket U35, with no Compaq part number to be seen. I was able to read this chip with my GQ-4X and can confirm that the...

Thanks for the links and the info. That CP/M boot disk was just what I was looking for. I had read about the 600 RPM drives, they do make a pretty noticeable difference. I was a little surprised that the drives in my system are working well after all this time, albeit with some mechanical...

I've finally gotten around to working on the two Sony SMC-70s that arrived on my doorstep a few months ago. Probing the mono composite out port on one machine, I found the video signal on the center pin of the 8 pin DIN socket. No idea what the other 7 pins are for, aside from maybe a speaker...

I just thought I'd share this neat little trick I stumbled upon while experimenting with the Windows 2.x ET4000 drivers on my Deskpro 286. I've recently acquired an NEC Multisync JC-1401P3A. As you might know, the original Multisyncs had a max resolution of 800x560, painfully close to 800x600...

Hi all, it's been a while :) I'm posting today because a friend of a friend was cleaning out his attic, one thing lead to another, and I'm now the proud owner of two working 6300s, plus a monochrome monitor, two keyboards, and the original docs and software :D Cracking open the earlier of the...

Hello everybody, it's been a while! :) I decided it was about time I revisited this forum and made a few posts. I picked up a Compaq LTE 5300 laptop for a few bucks earlier today, and was surprised by its condition. Apart from a loose cover over the PCMCIA slots, the thing looked and ran like...

After tossing the idea around in my head for nearly a year, I've finally decided it's time for me to branch out from the world of PCs and get an old Mac. I've saved up $50 to spend, and have done some research on the matter. I've decided that these models would be best to star with, since they...

Hi all, although I've recently has some major setbacks in life, I've had some good fortune with vintage computers lately. I'm friends with the tech guy at a local company, and they recently retired the server that they had gotten second-hand and had been running their network for 12 years. He...

This is a sad day for me. For financial reasons, I have to sell my 5160 and my 5161. I can sell them together, or possibly separated if I'm offered a good deal. This includes an IBM 5160, 5161, extender/receiver cards, and the cable to connect them. The 5160 includes one original IBM half-height...

Hi everyone, it's been a while since I've been on the forum, but I recently decided to dig out my old XT system and fire it up. Unfortunately, it's been having some problems. Instead of loading my GSI Model 11's BIOS, it just spits out the ROM address, gives me a 601 error, and after I hit F1 it...

I'm wondering if anyone's got one of the Microsoft BUS cards that went with the old "Green eyed monster". I should be getting some money in my paypal tomorrow if you do have one I'd be interested. Thanks!

I've got an NEC T-128 SCSI controller in a 5161, and my previous hard drive died so I bought a DEC DSP-3160 to replace it. I configured it as SCSI device zero, and to automatically spin up. When I boot up my 5160 and the T-128's BIOS loads, I get the message, "Unknown SCSI Drive." The system...

I noticed there was a thread like this for early Apple machines, so I figured people might want to show off their PC setup, also. Here's my beloved 5160/5161 setup as of today:

I have an IBM PC/XT 5160 which I am currently in the process of upgrading to my dream vintage PC. Right now, I use a Microsoft MACH 20 286 Upgrade Card with a Disk Plus add-on as my floppy controller. It supports up to 2 high density 5.25" floppy drives and with my modded cable 3.5" floppy...

I recently purchased an IBM 5161 in Ebay for a steal, however, it doesn't come with an extender card or cable for connecting the extender and receiver cards. If there is anybody out there who either has an extender card (the one that plugs into the main PC) or knows where I can get one. Thanks...

I am currently in the process of configuring my IBM 5160 to be as updated as possible, while still looking like a 5160 for the most part. In order to restore originality, I need either an ST-412 or ST-225 hard drive. I have an MFM controller that is set up for an ST-225 and can be configured for...

I am currently in the process of configuring my IBM 5160 to be as updated as possible, while still looking like a 5160 for the most part. I have an HD floppy controller, however I do not have an HD 5.25 FDD. If anybody has a black one they don't need, I would be very grateful if you could PM me...

Anybody got a driver that allows fat32 read/write from DOS 6.22? Google didn't turn up with much and it would be really useful to be able to access fat32 partitions in DOS.

For those of you who don't know, I have an IBM PC/XT 5160 that has 640K RAM, a 1.2Gb SCSI HD, and a 1.44Mb high density FDD. It currently has PC-DOS 3.3 and Windows 3.0 on the HD. I have some 1.44Mb MS-DOS 6.22 setup disks that I'd like to install on it, however whenever I try to boot from them...

I'm selling some of my semi-old PC parts: 1. Aztech MDP7800-U PCI dial up modem 2. Broadcom BCM94212 PCI dial up modem 3. D-Link DFE-5300TX+ PCI network card 4. Unknown name PCI parallel port card 5. Microstar MS-8837 AGP video card 6. Media Vision Pro Audiospectrum IXM-PAS16NS 16-BIT ISA sound...