On Tue, 20 Feb 2001, MagerValp wrote: > RB> A question: presuming that this project is freeware, is it > RB> possible to get the SCH but then the one with the logic that is > RB> replaced by the GAL? > > RB> This enables me to build the circuit using normal TTL-ICs. > > I'd be interested in this too. SMD is a bit out of my league. The schematics, the logic equations and the software will be open source. A hobbyist-friendly version of the circuit would probably use a MC6821 PIA and some glue logic. The software requires 9 programmable output pins: 8 for ROM bank selection and 1 for disabling the ROM. Some more outputs can be used for disabling certain RAM banks and for RAM write protection, but they are not absolutely necessary. Marko - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail firstname.lastname@example.org.
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