I mentioned in an earlier tread, the one about the Landmark diagnostic ROM, that I was developing a diagnostic ROM myself. The IBM-PC has two dip switch blocks, SW1 and SW2. SW1 is read by reading port A of the 8255 after bit 7 of port B has been set to 1. SW2 is read by reading the bits 4..7 of por...

Hello, I'm busy programming my own diagnostics ROM for the PC-XT and compatibles. I'm using the Landmark ROMs, to be found at [Moderator: Please do NOT post links to copyrighted material], as a reference. I tried the ROM meant for the XT under PCem and noticed that it raises an error on the three 82...

I already asked in the General part how to add external ROMs. Zup answered that for the moment it is only possible to install XT-IDE. His idea: rename my ROM to the XT-IDE one. Where do I need it for? I want to test and tweak Sergey Malinov's (Xi8088) Floppy-BIOS. If it works out allright, I want to...

Thank you very much!

I own two Xi8088s. I want to develop some programs for and I only just found out that V14 supports the Xi8088. So far I used V10.1 and the first thing I noticed was the different inerface. But the submenu wasn't that different. But still I wasn't able to find the Xi8088. What am I doing wrong? Thank...

I am writing a program that has to be run from an external ROM. So far I haven't found anyhing that tells me how to do it. I know it should be possible because the README.TXT says you can use XT-IDE but unfortunately doesn' tell you HOW to do it. It should be something simple but obvious I missed it...

I upload them to my site where you can download them. I'll notify you. http://www.baltissen.org/temp/et4000.bin As you can see, only one. One was a WDC card that you don't support AFAIK. I tested et4000.bin on a general XT, the Commodore PC30, the IBM XT with my own BIOS and on the IBM XT itself. B...

Hallo Battler, Oops, I completely overlooked the fact that I even have to supply the BIOS of the VGA card. I work with all my PCs in the same way: I connect them to my KVM switch. For the PC/XT compatibles I need an extra gadget: the AT2XT keyboard converter. For the same reason I also equipped my P...

Hello, I have a real IBM PC-XT with a VGA card. I often test software first on PCem on my laptop but in VGA specific cases that is impossible because PCem doesn't support VGA for the IBM-XT. Or do I do something wrong or missed something? If not, is it possible to support VGA, please? Thank you! Kin...

So far I have used WinImage only to create images of floppy disks and vica versa. To be honest, I have never thought about using it to manipulate hard disk images images. Just did a quick test: - it seems I cannot create directories my self inside WinImage - so I created one on my PC and filled it ...

Hallo Neozeed, winimage is a favorite way to manipulate virtual disk images for FAT/FAT32. So far I have used WinImage only to create images of floppy disks and vica versa. To be honest, I have never thought about using it to manipulate hard disk images images. Thank you !!! Groetjes / kind regards,...

Hallo allemaal / hello everybody, So far I used PCem only to test my own BIOSes for the PC-XT. Now I want to go a step further. But to be able to I need to install some software on the hard disk drive. If it was a 286 or better IMHO the means to do it is is to create a CD-ROM ISO and use that. But t...