New old schematics: VC-1112 and VC-10

From: Marko Mäkelä (marko.makela_at_hut.fi)
Date: 2002-02-15 21:51:27

In the autumn of 2000, I visited Schaltungsdienst Lange in Berlin and 
browsed through their catalogue.  The only schematic diagrams that 
seemed to be missing from FUNET at that time were the VC-1112 (VIC-20 
IEEE-488 cartridge whose reverse engineered schematic diagram was 
already archived) and VC-10 (which I already had seen as a poor-quality 
copy that I sent to Ruud so that he could draw the readable schematic).

To my disappointment, the VC-10 schematic was equally bad as the copy 
someone had mailed me some years earlier.

As I don't have access to a scanner, it took a "while" to get the images 
processed.  Finally, my friend scanned the two DIN A2 sheets (420 mm by 
594 mm) in several parts and burned them on CD-ROM.  I got the disk 
today, and after a GIMP session, here are the results:

http://www.funet.fi/pub/cbm/schematics/cartridges/vic20/ieee-488/1110010.png
http://www.funet.fi/pub/cbm/schematics/computers/c64/326100.png

I'm not fully satisfied with the latter picture.  I could try different 
filter settings, once I get a better scan of the sheet (which may take 
weeks, months or years).  As you can see, the four slices I got on the 
CD do not cover the top left and bottom right corners of the sheet.  The 
top left corner is interesting, because the detail table is located there.

	Marko



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