18:f1d60a768fbd
|
2022-07-05 |
Paul Boddie |
changeset
files
shortlog
graph
|
Added decoupling capacitors for RAM chips and tidied the layout somewhat. |
|
|
RAM.sch
|
|
17:daebb474911d
|
2022-04-03 |
Paul Boddie |
changeset
files
shortlog
graph
|
Moved the modified 4164 back into the DRAM library, also moving TM4164EA4. |
|
|
AcornElectron.lib DRAM.lib RAM.sch
|
|
16:8c68efc3a951
|
2022-04-03 |
Paul Boddie |
changeset
files
shortlog
graph
|
Added alternative TM4164EA4 RAM module. Changed RAM outputs to tri-state. |
|
|
AcornElectron.lib AcornElectronMainboard.sch RAM.sch
|
|
15:75a233ccc2c5
|
2022-02-27 |
Paul Boddie |
changeset
files
shortlog
graph
|
Removed keyswitch symbol, now present in the keyboard project instead. |
|
|
AcornElectron.lib
|
|
14:4a63b04afff9
|
2022-02-26 |
Paul Boddie |
changeset
files
shortlog
graph
|
Moved the keyboard matrix circuit into a separate project. |
|
|
AcornElectronMainboard.sch CPU_ROM_KBD.sch KBD.sch RAM.sch UHF.sch cassette.sch clocks.sch expansion.sch sound.sch video.sch
|
|
13:9b07289bbfbc
|
2022-02-26 |
Paul Boddie |
changeset
files
shortlog
graph
|
Added component numbering for the keyboard matrix. |
|
|
KBD.sch
|
|
12:aec8f8ba49a9
|
2022-02-26 |
Paul Boddie |
changeset
files
shortlog
graph
|
Added a sheet with the keyboard matrix circuit. |
|
|
AcornElectron.lib AcornElectronMainboard.sch CPU_ROM_KBD.sch KBD.sch RAM.sch UHF.sch cassette.sch clocks.sch expansion.sch sound.sch ...
|
|
11:aa42a38b72f0
|
2022-02-24 |
Paul Boddie |
changeset
files
shortlog
graph
|
Added capacitor properties, various NTSC elements plus workarounds. |
|
|
AcornElectronMainboard.sch CPU_ROM_KBD.sch UHF.sch cassette.sch sound.sch
|
|
10:07e94f9433be
|
2022-02-12 |
Paul Boddie |
changeset
files
shortlog
graph
|
Added diode for electrical rules check compliance. |
|
|
CPU_ROM_KBD.sch expansion.sch
|
|
9:bb29b264d9b9
|
2022-02-12 |
Paul Boddie |
changeset
files
shortlog
graph
|
Changed the NMI signal buffering to match the circuit diagram, on the advice of
the "Acorn Information - Volume 1" document, even though it is still a bit odd. |
|
|
CPU_ROM_KBD.sch
|
|