Recent content by richo132

Hi all, just thought I'd draw your attention to a copy of IBM DOS 1.00 that I have just listed for sale on ebay. http://www.ebay.com.au/itm/IBM-PC-DOS-1-00-in-pristine-condition/172944188680 It is listed as shipping to Australia only, but I will ship to USA at buyers cost using DHL. Cheers.

Attached pic shows some IBM case screws. 2 on left are known genuine - 1 large used outside case; 1 small used internally Other screws include 5 brassy coloured cad plated items. These have smaller diameter heads than the grey item on the far left. Anyone seen these cad plated screws used as...

Hi, I have a Connor IDE drive that MS DOS will not format - "Track 0 Bad" error. To get around this problem, I have loaded DR-DOS 5. This version of DR-DOS allowed me to choose where to put the boot files. Is this feature available with version 7.03 ? Reason for asking is that I want to run...

I have an ibm 65x5770 16bit extended memory adaptor that also has one serial and one parallel port. It is a full length card with 2 banks of 6 sockets for 60 pin simm modules. As obtained, it has 3 pairs of simms that are reported on boot as 1408kb. This appears to be 256 * 6 = 1536 - 128kb for...

I bought one of the "dbit FDADAP" boards a few months ago and have been looking out for an 8” FDD. Recently I was given an IBM unit (p/n 4240513) that I believe was a spare for IBM M/F equip – possibly a 3274 comms controller. Probably not relevant, but the drive is marked “Assembled in the...

Hi, the IBM disk controller card in my 5170 has part no 6480111 and Assy 61-031099-00 Rev X7. It has the following jumpers: Front end E1 E2 2 pin Closed Centre of board E1 E2 E3 3 pin E2-E3 Closed E4 E5 E6 3 pin E5-E6 Closed Back end, top E7 E8 2 pin Closed I would like to know what these...

Hi all, I've just jumped into the world of vintage IBM PCs. I have bought a 5150, 5160 and 5170 - plus some other things that caught my eye along the way :) Anyway as a newbie, I have been doing a lot of reading - especially of the posts on this site. However I have a problem with an ST-225...