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Monthly Archives: July 2014

Nerdly Pleasures: IBM PCjr. Upgrades

Saturday, 12 July 2014 08:17
Written by alan
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Nerdly Pleasures: IBM PCjr. Upgrades. The Nerdly Pleasures blog has a nice post on different upgrade options for the PC Jr.  Among them is our very own JR-IDE project!  If you haven’t the NP blog before, check it out for all things, vintage, computing, and nerdly!

Finished (more or less) with style updates

Monday, 07 July 2014 18:56
Written by alan
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I believe I’m happy with the current style on the site. I’m looking for feedback as to what works and what doesn’t before adding the rest of the content to the site. So please chime in with thoughts.

ZM56 Mod

Monday, 07 July 2014 14:19
Written by alan
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PC Jr ZM56 ROM

Instruction on how to modify your PC Jr main board in various ways to allow for Upper Memory Blocks to be added on side-cars in the ‘D’ and ‘E’ segments as well as a very experimental modification to allow 128 KB independent CGA video RAM from 640 main memory.

SuperCART

Monday, 07 July 2014 14:16
Written by alan
0 Comments

PC Jr Super Cartridge

Cartridge replacement board that allows up to 512 KB of cartridge ROM images in a single slot fully select-able via DIP switches good weight loss supplements.  It also allows you to replace your system BIOS with an image contained in the Super Cartridge.

jr-IDE project page partially updated

Sunday, 06 July 2014 03:19
Written by alan
0 Comments

Well the JR-IDE page is somewhat updated.  There is still a long way to go with more information to add and more style changes.  However making progress

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