------------------------------------------------------------
        z80 computer builds, (sdf.org), 08/24/2018
------------------------------------------------------------
I'm a fan of Grant Searle's z80 designs[1][2]. Recently, I 
was able to get the z80 CP/M build working. I had attempted 
it several times on breadboard, then purchased a pcb 
thinking that my wiring might be the issue, only to find 
that my parts were the issue. Right now, I have a 
functioning pcb version of that, which I'm attempting to get 
working with compact flash (I have the CF portion in both 
pcb and on a prototype board.) Unfortunately, it's quite 
picky about the CF card; I'm waiting for another from ebay.

Since old/small/slow CF cards aren't easy to find, I'm 
looking into another project that let's you use SD with 
Grant's design[3]. Right now, I'm waiting to hear back from 
DtZ about whether I should use LS, HC, or HCT versions of 
the 74xx ICs that his design needs. I ordered an SD breakout 
from China, so I have plenty of time to mull that over.

Apart from this current project, I still need to find space 
for my "Simple z80 with ROM BASIC" build, with cassette 
interface. I live in a more humid place now, and I'm nervous 
about rust from storing things in the non-climate-controlled 
garage... so I need to find a solution sooner than later!

[1] http://searle.hostei.com/grant/index.html
[2] gopher://grex.org:70/1/~tfurrows/projects
[3] http://xepb.org/dtz/sgsbcsd.html