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Pages: . Why would you need a 64x1 memory? That's tiny, even by s standards. This has bit x 8 right? Or am i reading that wrong? And it is tristate. Read the datasheet. Quote from: allanhurst on Apr 19, , am. Late 's. It had 32k eprom, 4k RAM. After waiting months for the 74LS without any luck, I decided to use the P integrated circuit instead.
I will never ask you to do anything that I wouldn't do myself. Quote from: allanhurst on Apr 18, , pm. Your sketch can make events to control it over time. Quote from: Arduino99 on Apr 18, , pm. For me the nicest little 8-bitter was the Lovely offset addressing scheme so you could implement stacks and re-entrant routines easily. I wrote a little operating system for a client in the mid - 80's on one of these.
The later 68HC11 wasn't quite as neat. AWOL Guest. The was indeed an impressive processor; neat, orthogonal instruction set.
I liked the Z80, but I loved the In the mids, I worked for a company where we had a twin architecture; one to run the full-size 10MB! Winchester, and the other to run the bed-of-nails whole-board tester, which was a with a 1MB, page-switched address space, with the MMU implemented in PALs. The code all Motorola assembler had developed from an earlier design, and we were able to make impressive improvements, by re-crafting the code to make better use of the 's instruction set.
Once you have your 8-bit computer built, what are you going to DO with it? If you have a neat OS in you then please look to non-obsolete hardware and pick one that you can fly with. If it can be lightly thrown away, was it worth making at all?
74S189 MEMORY. Datasheet pdf. Equivalent
74S189 (SN74S189BJ) 64-bit RAM - Texas Instruments
74S189 Datasheet PDF