Old Computers
Veteran Member
I have recently obtained an Intel iPCB-76 PC-Bubble card. From the documents I have received with the card it appears to be the same as an iPCB-75 but with a BIOS extension for it to act as a fixed disk.
After double checking the settings specified in the manual and the errata pages that came with it, I set all of the jumpers to the suggested settings for a system with no Winchester disk and 1 card. I installed it, and it wasn't recognized. I double checked the jumpers and made 2 corrections and then it was recognized. I was able to run fdisk on it, and format it. When I tried to run select on it, it copies the disk's files to a point then gives me a drive not ready on write error. When I run sys on it sometimes it reports that the size is too small, but usually it gives a drive not ready on write error. This error happens on format c: /s and when trying to copy certain programs (seems to happen when I tried to copy basica to the drive. I haven't tried much else yet).
After choosing the fail option on the above commands it appears that the files that did copy copied just fine (and I have verified that the format and files copied stay after being powered off). I am able to run command.com just fine from the drive. The problem I have found is that when the system tries to boot from it, it enters a boot loop. Could the IRQ, address, and/or port settings cause this bootloop and write errors? I am using PC-DOS 3.30. The errata page mentions that it is compatible with DOS 2.0-3.1 PC, PC/XT, and PC/AT. It also mentions a DOS patch for PC/AT systems with a date of 1984. I followed the checks the document listed and my system appears to not need this patch. Could DOS 3.30 be too new?
The system it is installed in is an IBM PC/XT with MDA, what I believe to be a joystick card, and an FDD controller.
Also if anybody has any info on this card I would appreciate it. The documents mention a program called 4-SITE and the DOS patch. I am especially interested in these.
After double checking the settings specified in the manual and the errata pages that came with it, I set all of the jumpers to the suggested settings for a system with no Winchester disk and 1 card. I installed it, and it wasn't recognized. I double checked the jumpers and made 2 corrections and then it was recognized. I was able to run fdisk on it, and format it. When I tried to run select on it, it copies the disk's files to a point then gives me a drive not ready on write error. When I run sys on it sometimes it reports that the size is too small, but usually it gives a drive not ready on write error. This error happens on format c: /s and when trying to copy certain programs (seems to happen when I tried to copy basica to the drive. I haven't tried much else yet).
After choosing the fail option on the above commands it appears that the files that did copy copied just fine (and I have verified that the format and files copied stay after being powered off). I am able to run command.com just fine from the drive. The problem I have found is that when the system tries to boot from it, it enters a boot loop. Could the IRQ, address, and/or port settings cause this bootloop and write errors? I am using PC-DOS 3.30. The errata page mentions that it is compatible with DOS 2.0-3.1 PC, PC/XT, and PC/AT. It also mentions a DOS patch for PC/AT systems with a date of 1984. I followed the checks the document listed and my system appears to not need this patch. Could DOS 3.30 be too new?
The system it is installed in is an IBM PC/XT with MDA, what I believe to be a joystick card, and an FDD controller.
Also if anybody has any info on this card I would appreciate it. The documents mention a program called 4-SITE and the DOS patch. I am especially interested in these.