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This might be a cool project to build at Seeed. I think they could populate a board with sockets, SMD resistors, jacks and switches, leaving just the chip inser
by mmastrac 10y ago
This might be a cool project to build at Seeed. I think they could populate a board with sockets, SMD resistors, jacks and switches, leaving just the chip insertion for the end-user.
Caveat: I've only ever had them build an unpopulated through-hole board for my one hardware project.
- pjc50 10y agoParts availability might be a serious problem, especially the ULA.
- UncleSlacky 10y agoThe ZX80 used TTLs, only the '81 and Spectrum used ULAs.
- tynemouthsw 10y agoThat's the point of this clone, it's based on the ZX80 which uses only standard TTL chips, all of which are still available today. The original 1K RAM chips and mask ROM are not, but modern parts have been substituted. The next version will incorporate an NMI slow mode circuit which will make it fully ZX81 compatible, still only using standard TTL parts.
- timthorn 10y agoDoesn't look like there's any surface mount involved - in other words, the construction aspect shouldn't be hard. Remember the original ZX80 was available to buy in kit form!
- mmastrac 10y agoI realize that. What I'm saying is that he/she could produce a second board with SMD components to replace the thru-hole passives, leaving only the insertion of the chips to the end-user. I have an EE degree myself, but soldering has never been terribly enjoyable.