The Retrobrew ECB is a great series -- 160mm x 100mm. Virtually all through-hole construction. Software is great. I have maybe 25-ish different CPU and peripheral cards. For the CPU, I have a 65816, Z80, 80188 and 68008. I've designed a couple of cards for the series. I'm working with John Monahan on getting this working with his SBC188, which is an 80188-based SBC that runs MSDOS. Right now, we're figuring out the DMA part since the '188 kind of stinks at it. Rich -- Rich Cini http://www.classiccmp.org/cini http://www.classiccmp.org/altair32 On 12/28/20, 1:39 PM, "Neil Cherry" <ncherry@linuxha.com> wrote: On 12/28/20 1:23 PM, Richard Cini via vcf-midatlantic wrote: > Ha, too many projects: > > * New S100 plastic case for my “test” system. > * VIC-20 recreation on an S100 card sized board. > * SCSI expansion card for the Retrobrew SBC series. I just found a bunch of 53C80 chips. I think I purchased them in the 80's. Which boards are you working on or is this a generic SBC? -- Linux Home Automation Neil Cherry ncherry@linuxha.com http://www.linuxha.com/ Main site http://linuxha.blogspot.com/ My HA Blog Author of: Linux Smart Homes For Dummies