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Do commercially produced floppies (let's say IBM formatted 360k disks for simplicity's sake) offer any quality advantage over if you were to just create a floppy from your own PC? I'm not even sure what technology was used to produce software back in the day, but curious if it is any better...

I pulled these 4 ROMs out of a clone board that had battery corrosion. Would there be any chance of damage if I tried them in a 6 mhz 5170? Compatibility Software (C) 1985, 1986/E Phoenix Software Assoc. Ltd. 38589 cant read all of the chips but two say NMC27CP128Q

I got this card from someone who said it's from an XT. It's got a battery on it, a z80, appears to be 256k of memory. It also has some sort of ROM with adapter. ROM is labeled DG/PC-6 900145-018 5250 There is a sticker on the slot that says 327 DG/PC-6 900157-000 5250 Has a 60 pin female...

I've got a "new" IBM 5150 with the 16-64 board and 10/27/82 bios. It came with this SixPakPremium card, but no matter what I try, I get 201 errors. 1090/1095, 201. I pulled the card out with no switch changes and I got the 1090 201 error. I set the IBM to 64k and took the card out, and no...

I just acquired a July 9th 1986 5150. Since sources I've seen say it was discontinued in 1987, made me wonder who here has one of the last off the line? Serial on this one is 20421415150

Looked around but couldn't find a complete list of which hard drives IBM OEM'ed for the XT and ATs through their lives. Anyone know of one?

Just wondering if it is possible to replace the useless Cbasic in rom on 5150s to even disk basic or DOS or cp/m.

Got this untested and of course it was packed like garbage. When I power it on with no signal and brightness up, about 2/3 of the screen is green, the rest is black. I plugged in a PS2 and same thing. The text on the right of the screen looks bad too. Seems like the brightness is not...

Anyone know what this mod is, if it even is a mod? It was between the floppy drive cage and the cpu board. There is a 128k sticker on the machine

I just got a TRS-80 model 4, and I'd like to get a cassette cable if anyone has one extra. May also be interested in the cassette player also if the price is right.

I just bought a model 4, and don't know much about them. It was running frogger when I bought it so couldn't really test much. I brought it home and made some TRSDOS disks, but it seems the left shift key doesn't work. Other keys seem to double press at times. Before I tear into this...

I moved to a new place and all my computers haven't been touched in about a year and a half. I figured I better get them out of the garage since there are tons of mice I keep catching. I fired up my IBM AT and was surprised to see it powered right up. I have three 5170s and the few times I...

Hi, Does anyone have disk images or software for the Miracle Piano? I've seen the links from PianoEducation.org, but they just link to an incomplete folder of files.

Does anyone know what the efficiency of the older IBM 5150/5160/5170 power supplies are, and what they would translate to in today's power supply ratings?

I have an AST Advantage board that I've been using in one of my AT systems. It's been working fine using the first bank with 64k chips. The first bank is 128k and using that to backfill the base memory to 640k on the 5170. (512k on board on the 5170.) I decided to put more memory in the board...

Yes it’s an MFM controller that also had the floppy controller built into it. That would be great if you had one.

I had a post HERE about an issue with a 5170 fixed disk card being wonky. I had replaced the three caps on the bottom of the card just to try and see if that helped... It didn't. It was advised to try the card in another machine which I was doing. This is a 5170 that I hardly use. The old...

I must have a bad fixed disk card in one of my ATs. It occasionally throws a 601 error on post. Also it always throws a “ disk unusable” Error when trying to format a diskette. Reading is also flakey. Not sure what the issue is. I borrowed a card from my other system and it seemed to work...

I got this CRT monitor for free a while ago. The guy neglected to mention there is some sort of break in the cable, where the red color drops out and takes a lot of fiddling to get it working. There may also be a short in the cable as well. When I had it hooked up to my 386, the thing would...

I started playing around with my older machines again after a long hiatus. Had a daughter born and she takes up a lot of free time so I haven't got to play with my junk much. This is why my memory is fuzzy when it comes to what I've done to transfer files. Anyway, I have a couple machines I...