Mike's PCjr Page

I don't know for sure, but consider that the power sidecar was intended to be the first sidecar in the chain--it should be passing through all lines in use.

I use the two together without a problem. My sidecars (starting from the main unit) are Power, Speech, LPT1, LPT2, then jrIDE.

Agreed, Speech sidecar, based on the 3.5mm jack labelled "M".

I always thought it was a light pen port but never gave it much thought, not caring much for light pens.

It's definitely under the disk drive and will be marked with "8088." Hopefully yours is socketed. You're in good hands with Chuck.

Try Mike's "dskimage" program on your 486 to write out the .img files to 360k floppies. If it's a true 360K drive you should be good. If it's a 1.2MB it's less likely to work, but could. https://www.brutman.com/PCjr/pcjr_downloads.html#DskImage Extracting the individual files as you've don...

Like this then: https://www.ebay.com/itm/IBM-PCjr-Modem ... 4389322040

Do you mean this?

https://www.brutman.com/PCjr/pcjr_jrcombo_card.html

No direct experience here, but I have been looking into it and so far unwilling to make the investment. My best guess is that you will need three components: digital CGA -> analog CGA converter, CGA -> VGA upscaler, and finally VGA -> HDMI converter. Plus a PCjr->9-pin display adapter cable in front...

I installed three switches and reassembled it. Getting the floppy drive plastic to pop back into place was a pain. The top switch is momentary reset, then latching speedup, and latching Tandy graphics. Interesting things happen when toggling the Tandy switch during games. Well, not that interesting,...