Mike's PCjr Page

I actually find the eBay seller's response even more humorous now. He doesn't really understand what he has. I consider myself fairly plugged in to the PCjr community (here, duh!) and I can count the people I know with any double-decker expansion on one hand. And to hold out for a buyer that has a b...

OK, I stand corrected. I actually have a Quadram expansion for one of my Jrs. I looked in it and posted a photo over on the VCF thread.

I saw this too. Not sure where he got the PCjr reference but I am certain the seller is mistaken. The ground and power pins on that card do not line up with the PCjr side-car connector at all. It's from some other machine type.

You can simply view the detected drive geometry and partition table by running fdisk without options and selecting menu item '4' - Display partition table information.

Jeff, What exactly did you have to hack? Were the cart images specifically referencing D/E segments? I would (hope) they just used a single flat segment for TEXT (default CS) and placed RAM down in some scratch area in the lower 4-64K range.

Did you reboot the machine after?

Yes. There is a reflash utility on the project page. Also all source is in an SVN repo linked from the project page.

-Alan

Yes to the option ROM. There is plenty of room. 16K window and you can enable another 16K window that pans around the entire 512K flash.

I am assuming that if Int 1Ah has a non-error handler hooked before MSDOS starts, it will read and set the DOS clock automatically.

*cough* If someone - not naming names - but maybe initials 'MB' would add int 1A support to the BIOS *cough*

Sorry I need more vitamin C

I did test the RTC before I sent it. Make sure the battery is inserted correct - positive/flat side facing outward. I can swap the board out if that isn't it. The IRQ is only for the 'alarm' function which there is no current BIOS support for atm. The reason the utility is failing is the RTC chip is...