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| GenTooMan | you can do so with 74180 and 74181 eons ago someone made a 16 bit CPU with those as part of the ALU. | 03:36 |
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| ZirconiumX | GenTooMan: the 181 and 182 are obsolete parts | 07:26 |
| tnt | SN74ACT8832 :) | 07:31 |
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| tnt | (also obsolete, but damn, that was one hell of a 7400 series chip) | 07:33 |
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| ZirconiumX | >ACT | 08:57 |
| ZirconiumX | Holy crap that *is* one hell of a chip | 08:59 |
| ZirconiumX | tnt: I've never even heard of that chip; TIL | 09:01 |
| tnt | I didn't either until I looked at what 74 series chips had ALU in them. | 09:01 |
| tnt | you can still buy it for like 250$ :p | 09:01 |
| dys | ceramic-cased ones are twice that :-) | 09:08 |
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| dys | IIRC there's a homebrew-cpu guy out there that built an 32-bit ALU with them in a 32-bit risc design called t-rex | 09:10 |
| dys | his motivation for going discrete logic was his disgust with the proprietary fpga toolchains | 09:11 |
| dys | <3 yosys | 09:12 |
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| GenTooMan | ZirconiumX I had no idea they were talking using real chips. :D I believe the 281 is not obsolete but I could be wrong. | 12:07 |
| ZirconiumX | Uh | 12:08 |
| ZirconiumX | Do you mean the 283? | 12:08 |
| GenTooMan | ZirconiumX 1 probably (LOL) and 2 apparently the military version of the 181 is still available (shocking) 3 SN74ACT8832 is likely from TI's GPU days in the 90s. | 12:16 |
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| tnt | Wow, it's amazing that adding a (* keep="true" *) wire, that is _not_ used anywhere actually changes the synthesis result quite a bit. | 20:51 |
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