No problem. I preemptively ordered the parts to make 5 because I don't think too many people will want one and I didn't want to wait just to find out how many.
I'm not looking for money but I guess I should figure out the parts cost just so everyone feels square. Still waiting for pcbs and parts for another week. bkw On Sat, Aug 3, 2024, 12:10 PM Me Myself and I <[email protected]> wrote: > Hi! Im not usually active in the mailing list, but Ive been reading on > all the cool things people have been doing. I am interested in getting one > of Brian's Molex Socket Bus Taps. Let me know what you need from me to > help make that happen. > > -February > > On Tue, Jul 30, 2024, 10:23 PM Brian K. White <[email protected]> > wrote: > >> Anyone want one of these? >> https://github.com/bkw777/Molex_7880x_bus_tap >> >> I'm going to make one for myself and I don't mind making a few more >> along the way, considering "Anyone" is probably just Steve since it >> would mostly just be useful for debugging REX and REX-like things. >> >> The two parts are connected by an FFC cable and lets you connect a logic >> analyzer to the option rom socket while something is in operation in the >> socket. >> >> The cable is thin and you can even install the rom door cover and flip >> the machine back over and use normally with the rom hanging out to the >> side of the machine. >> >> What I want it for is, this doesn't work, but I think it's close, maybe. >> >> https://github.com/bkw777/REX_ATF >> >> >> REX Classic and REX# are based on the Xilinx XCR3064XL CPLD. That part >> was EOL'ed last year. >> >> This Microchip (ATMEL) ATF1504ASL is a very similar chip, and is still >> being made and sold new. >> >> Extra bonus, it's a fully native 5v part, so there is no 3V3 regulator >> needed and only one VCC rail to route which makes the pcb simpler. >> >> And I managed to reassign some pins so the jtag pins are not used for >> general i/o, so programming is a lot simpler. No more aux power >> connection, power cmes from the programmer, no more PORT_EN jumper and >> pulldown resistor, just connect the jtag and go. >> >> -- >> bkw >> >
