From: Marko Mäkelä (marko.makela_at_hut.fi)
Date: 2003-01-22 10:18:18
Gideon, > I don't have a source for the Am29F032B in SO44, but the board layout > for the 32-bit processor that I made also has an Am29LV017D (2 MB) in > TSOP-40 package. Yes, I know that chip. Our first prototype uses that chip, but we had several problems with it, starting from the fact that the cartridge port connector was drawn as a mirror image. (You know, the VIC-20 cartridge port pins are numbered from the opposite end than the C64 cart port.) I think that SO44 is much easier to solder than TSOP-40. Also, I'd prefer to use a 5-volt-only design. This design only needs three ICs and some capacitors and resistors. A 3-volt Flash would need a 5-volt tolerant logic chip with some 64 I/O pins. The VIC-20 cartridge only needs one with 32 I/O pins, in an easy-to-solder PLCC package. Good luck for your project! Does the cartridge work on the C128 as well? Are you going to publish the design? Marko Message was sent through the cbm-hackers mailing list
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