REV H1 information and interest
Posted: Sun Feb 24, 2019 11:34 am
The H1 is the current board which I am looking to get made later in the year if there is enough interest..
The H1 schematic is here https://www.exxosforum.co.uk/forum/viewt ... =73&t=1475
I will update this thread with more info, I may have forgot to add things....
CHANGES:
All the changes and fixes from the Alpha which generated the REV G design https://www.exxosforum.co.uk/forum/viewt ... =19&t=1230
DMA / 1772 BUFFER ISOLATOR https://www.exxosforum.co.uk/forum/viewt ... =73&t=1437
CPU EXPANSION HEADER https://www.exxosforum.co.uk/forum/viewt ... =73&t=1452
POWER CONNECTORS https://www.exxosforum.co.uk/forum/viewt ... =73&t=1440
MONO SWITCH (similar to UBE switch) https://www.exxosforum.co.uk/forum/viewt ... =73&t=1448
SMT CAPACITORS https://www.exxosforum.co.uk/forum/viewt ... =73&t=1443
RGB DRIVERS REPLACED WITH FALCON DAC https://www.exxosforum.co.uk/forum/viewt ... =73&t=1442 AND https://www.exxosforum.co.uk/forum/viewt ... 260#p14851
DMA HEADERS ADDED https://www.exxosforum.co.uk/forum/viewt ... =73&t=1447 AND https://www.exxosforum.co.uk/forum/viewt ... =19&t=1289
FMCII RTC ADDED https://www.exxosforum.co.uk/forum/viewt ... =73&t=1458
RESET CIRCUIT UPDATED https://www.exxosforum.co.uk/forum/viewt ... =73&t=1441 AND https://www.exxosforum.co.uk/forum/viewt ... =19&t=1234
LS INVERTERS REMOVED https://www.exxosforum.co.uk/forum/viewt ... =73&t=1438 ***
RW ADDED TO CARTRIDGE PORT https://www.exxosforum.co.uk/forum/viewt ... =19&t=1261
DE JUMPERED TO BREAK GLUE TO MMU CONNECTION
ADD 72 PIN SIMM SOCKET https://www.exxosforum.co.uk/forum/viewt ... =73&t=1453
***A lot of TTL logic was removed in favour for smaller tiny logic gates.
PLANNED / WIP:
AB SWITCH https://www.exxosforum.co.uk/forum/viewt ... =19&t=1267
IDE https://www.exxosforum.co.uk/forum/viewt ... f=73&t=371
TO DO:
Fix and add various holes into the MB.
Locate and figure out how to mount US internally - (idea abandoned to speed up development).
Still not fixed the reset switch lib.
PEOPLE INTERESTED IN SUPPORTING the REV H1 BUILD
PaulJ X2
kodak80 X4
Icky X2
denni505 X1
chlu600 X2
IngoQ X1
tin X2
Xyla X2
JezC X1
redhawk668 X1
exxos X2
Rubber_jonnie X1
PhilC X3
DoG X1
poobah X1
alienkidmj12 X1
wietze X1
btl (aka Beetle) X1
derkom X1
( Post below if anyone else is interested, might have missed some people already sorry!)
The H1 schematic is here https://www.exxosforum.co.uk/forum/viewt ... =73&t=1475
I will update this thread with more info, I may have forgot to add things....
CHANGES:
All the changes and fixes from the Alpha which generated the REV G design https://www.exxosforum.co.uk/forum/viewt ... =19&t=1230
DMA / 1772 BUFFER ISOLATOR https://www.exxosforum.co.uk/forum/viewt ... =73&t=1437
CPU EXPANSION HEADER https://www.exxosforum.co.uk/forum/viewt ... =73&t=1452
POWER CONNECTORS https://www.exxosforum.co.uk/forum/viewt ... =73&t=1440
MONO SWITCH (similar to UBE switch) https://www.exxosforum.co.uk/forum/viewt ... =73&t=1448
SMT CAPACITORS https://www.exxosforum.co.uk/forum/viewt ... =73&t=1443
RGB DRIVERS REPLACED WITH FALCON DAC https://www.exxosforum.co.uk/forum/viewt ... =73&t=1442 AND https://www.exxosforum.co.uk/forum/viewt ... 260#p14851
DMA HEADERS ADDED https://www.exxosforum.co.uk/forum/viewt ... =73&t=1447 AND https://www.exxosforum.co.uk/forum/viewt ... =19&t=1289
FMCII RTC ADDED https://www.exxosforum.co.uk/forum/viewt ... =73&t=1458
RESET CIRCUIT UPDATED https://www.exxosforum.co.uk/forum/viewt ... =73&t=1441 AND https://www.exxosforum.co.uk/forum/viewt ... =19&t=1234
LS INVERTERS REMOVED https://www.exxosforum.co.uk/forum/viewt ... =73&t=1438 ***
RW ADDED TO CARTRIDGE PORT https://www.exxosforum.co.uk/forum/viewt ... =19&t=1261
DE JUMPERED TO BREAK GLUE TO MMU CONNECTION
ADD 72 PIN SIMM SOCKET https://www.exxosforum.co.uk/forum/viewt ... =73&t=1453
***A lot of TTL logic was removed in favour for smaller tiny logic gates.
PLANNED / WIP:
AB SWITCH https://www.exxosforum.co.uk/forum/viewt ... =19&t=1267
IDE https://www.exxosforum.co.uk/forum/viewt ... f=73&t=371
TO DO:
Fix and add various holes into the MB.
Locate and figure out how to mount US internally - (idea abandoned to speed up development).
Still not fixed the reset switch lib.
PEOPLE INTERESTED IN SUPPORTING the REV H1 BUILD
PaulJ X2
kodak80 X4
Icky X2
denni505 X1
chlu600 X2
IngoQ X1
tin X2
Xyla X2
JezC X1
redhawk668 X1
exxos X2
Rubber_jonnie X1
PhilC X3
DoG X1
poobah X1
alienkidmj12 X1
wietze X1
btl (aka Beetle) X1
derkom X1
( Post below if anyone else is interested, might have missed some people already sorry!)