SVI-728 All Mysteries You need [important: CPM and DOS Bios source code]

Welcome here, Radio Operator!

Very interesting that SVI hardware info... much redundant crap (like in many Sony service manuals), some schematics only partly readable, but I can't remember seeing a SVI-728 schematic before. Too bad this kind of info often pops up after you need it, wish I had these docs in the late 80's. Did you scan/upload this stuff yourself, or only found it?

Btw: you don't happen to be this RadioOperator, that's selling some MSX-related IC's (among other) on eBay, are you?

Thanks for the info :-)

It's a gold mine, a complete service manual, 320 pages including cover!
Hopefully a version with lossless images will appear (PNG, TIFF, JPEG2000) for the source code and circuit diagrams.