On 8/11/2011 8:33 AM, Hoffmann-Vetter, Martin wrote: > Pin 21 from the 2332 must be used to generate the chip select for the > eprom. Is that the wire to pin 2 of the 84hct86? If yes, this can be > work. Only if the 2332 is programmed with on chip select at pin 21 or > non chip select would be a problem. You can't disable the use of the > chip select from pin 20, you can only programm the polarity. You need > the jumper SJ3 for output enable (pin 22) of the eprom, too. Greetings > Martin Message was sent through the cbm-hackers mailing list Looking at the 2316, I think I need a different strategy. I wonder if there's a solution that uses a single '138 and some jumpers and pullups. Jim I was thinking I could feed the CS1,2,3 lines into the '138 with jumpers and pullups on the '138 input lines. Then, 8 jumpers to select which combination was needed for the JEDEC /OE line. That would handle inversions of any line, but each of the CS lines needs 3 states: connected to nothing connected to '138 connected to JEDEC pinout. So, I'd need 3 2 way jumpers and 8 1 way jumpers to handle every combination. Thoughts? -- Jim Brain brain@jbrain.com www.jbrain.com Message was sent through the cbm-hackers mailing listReceived on 2011-08-12 04:00:26
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