74S189 DATASHEET PDF

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Pages: [1]. 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?

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