roelhYesterday evening the pcb's arrived... I did send the gerbers only 5 days ago to China.... Now here I have 10 pcb's for only 15 Euro, with free shipment... unbelievable....
So I assembled one:
It is nice to see this 4-bit ALU next to the 8-bit relay-ALU from the RISC Relay CPU :
This is not completely fair, because the relay ALU has more functions:
- It is 8 bit wide instead of 4 bit
- It has input registers (latches in this case) for both 8-bit inputs A and B
- It can do addition for binary coded decimals, as well as for straight binary
- It can also do 7-segment encoding
But the Relay ALU can not do subtraction. It can subtract because the registers can deliver inverted bits.
The next step will be, to check or demonstrate the operation of the ALU. I will have to build a small demo setup.
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Nice looking design! I am looking forward to testing this out on some my 4-bit designs!
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It would be nice to see it used in a design. Shall I send you a bare pcb ?
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thanks for the offer, but i already ordered some pcbs with the gerbers you posted. i'll be testing it with my DDL4-CPU project: https://hackaday.io/project/158510-ddl4-cpu
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I'm very pleased to see that you want to use it in your project, I can't wait !
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Hi Dave, have you received the ALU boards yet ? Did you build and test ?
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