http://www.utsource.net/ is the only place in china that I found to be reliable..... I'v had good luck with them....
i~~ _/) ~~~~ _/) ~~~~ _/) ~~~~ _/) ~~i Tom Lafleur (858) 759-9692 > On Jun 29, 2014, at 2:04 AM, Andrew Bingham <[email protected]> wrote: > > For US folks, I just purchased the WD37C65 for my ECB SBC-188 from Quest > Components. I also ordered some NEC 7220s and the BT RAMDAC chips that go > with them for a future build of the ECB (and maybe the new S-100) upD7220 > boards. > > I'm in California and the parts showed up the next day, perfectly packed, > exactly what I ordered. > > They have some 20 Mhz Z80s too. > > I think there is a minimum order which is why I combined and ordered a few > things at once. > > I also noticed they have the chips for the 286 board including some of the 12 > mhz bus chips that John mentioned in his write-up he was trying to locate. > > Always nice to deal with a US company. > > Andrew B > >> On Saturday, June 28, 2014 10:16:16 PM UTC-7, David Fry wrote: >> Hi all, >> >> does anyone know a reliable source for a WD2793 floppy controller ic, I have >> been looking on ebay and am also concerned that many of the TMS2793 look >> suspicious, too many suppliers with identically printed/date coded chips. I >> can believe that there is a large stash of these parts in China. >> the whole fake IC this is very frustrating, I buy from reputable suppliers >> where possible but many of these chips are obsolete/not stocked. >> >> wrt 20mhz Z80 CPU , Mouser has 119 DIP's on order with an estimated delivery >> of 3/10/2014 for those who can wait >> >> http://uk.mouser.com/Search/Refine.aspx?Keyword=z84c0020 >> >> regards >> >> David Fry >>> On Sunday, June 29, 2014 3:44:02 AM UTC+1, curt mayer wrote: >>> I've got a 8088 cpu blank, and a z80 cpu populated. I bought a 10 chip >>> lot of z84c0002pec's from ebay, and was a bit horrified when I got them to >>> find >>> that they smelled of new paint. identical fronts, but the backs showed >>> different countries (indonesia and phillipines), all with different mold >>> imprints. >>> >>> obviously shenanigans. >>> >>> so, I wired up a 20mhz test rig for the z80's, using a derivative of >>> dunfield's no-ram monitor (i disassembled it and added a lot more code), >>> and not a one tested >>> out at 20 mhz. one limped at 16, 2 ran at 12, and the rest were good at 8. >>> all tested as cmos: the out (C),F instruction sends FF, the nmos sends 00. >>> >>> for 15 bucks, I got a bunch of mildly useful z80s of unknown actual >>> characteristics. >>> >>> anyhow, now i want to build the 8088 board with V20's - NEC has a part >>> number for dip-40's at 16mhz. 70108hcz-16. lots of them available on ebay >>> from china. >>> >>> any experiences here before I become the ebay counterfeit chip crash test >>> dummy? >>> >>> --curt > > -- > You received this message because you are subscribed to the Google Groups > "N8VEM-S100" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "N8VEM-S100" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
