TMS9995 'Mini-Cortex' Homebrew Micro
Posted: 27 Mar 2015 12:19
A Chap on the Powertran Cortex Forum has made a Homebrew Mini-cortex micro complete with PCB. Specs are
U1 TMS9995
U2 74LS612
U3 74LS14
U4 AT28C256
U5 628512-55
U6 74HCT688
U7 Sparkfun slim CF Card Board
U8 TMS9902A
U9 Elektor FT232R Board
U10 74LS259
U11 GAL22V10D
U12 74LS74
U13 74LS112
U14 74LS138
U15 F18A Board
Funkward-tech can do the ICs for $25 all in, the Sparkfun Slim CF Card Board are not available from Sparkfun any more, but I've been told you can still get them ??
U9 Elector FT232R board is a RS232 to USB board about $20 to connect to to PC
The F18A is video output to VGA type monitor about $75 though this is not essential.
see the Powertran Cortex Forum
http://www.vintage-computer.com/vcforum ... tex/page78
U1 TMS9995
U2 74LS612
U3 74LS14
U4 AT28C256
U5 628512-55
U6 74HCT688
U7 Sparkfun slim CF Card Board
U8 TMS9902A
U9 Elektor FT232R Board
U10 74LS259
U11 GAL22V10D
U12 74LS74
U13 74LS112
U14 74LS138
U15 F18A Board
Funkward-tech can do the ICs for $25 all in, the Sparkfun Slim CF Card Board are not available from Sparkfun any more, but I've been told you can still get them ??
U9 Elector FT232R board is a RS232 to USB board about $20 to connect to to PC
The F18A is video output to VGA type monitor about $75 though this is not essential.
see the Powertran Cortex Forum
http://www.vintage-computer.com/vcforum ... tex/page78