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Last visit was: Thu May 01, 2025 12:07 pm
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It is currently Thu May 01, 2025 12:07 pm
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The next design - a octal 20 bit cpu
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oldben
Joined: Mon Oct 07, 2019 2:41 am
Posts: 768
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Changed the name to Micro Mini Computer. Added in all the features I could fit.
ADX add with out setting flags to reg
ATX add << 1 to reg
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| Fri Jun 14, 2024 8:14 am |
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oldben
Joined: Mon Oct 07, 2019 2:41 am
Posts: 768
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Reducing memory to 18 bit addressing, and revising order code to be more like the 16 bit cpu.
Emulation on 68000 with 1 meg ram, and all I/O will be vectored calls to the 68000.
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| Wed Jul 17, 2024 8:04 am |
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oldben
Joined: Mon Oct 07, 2019 2:41 am
Posts: 768
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My 68K cpu kit has been assembled and seems to work. Since I am emulating rather than 2901 hardware
I can try a 18 bit version.
While looking the web page for more info on setting up, I ordered the AFT150X CPLD programner on sale.
Using 64x9 ram (from the 70's) and ATF1508's CPLD's I can have a ALU card with about 6 chips
as a design goal.
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| Sat Aug 03, 2024 6:53 am |
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