Andrew Makousky
1ebb48e1c9
Update README.md, configure XTAL pins.
2020-09-11 16:38:32 -05:00
Andrew Makousky
1484f7a189
Remove tabs, oops sorry.
2020-09-11 16:12:18 -05:00
Andrew Makousky
93edc73c2a
Add option to skip XPRAM tests.
2020-09-11 16:01:00 -05:00
Andrew Makousky
fe1bb541c1
Act on falling edge rather than rising edge.
...
Programming defensively with knowledge of the ROM quirks, this seems a
safer bet.
2020-09-11 15:50:15 -05:00
Andrew Makousky
3079bd621f
Write automated test suite, 8 MHz clock, code cleanup.
2020-09-11 15:35:07 -05:00
Andrew Makousky
1d36abf470
Refactor test-rtc.c for more modular layout.
...
Yes, a more modular layout, albeit the fact that this is still but one
single source file. However, this reorganization will better
facilitate breaking this up into module files.
2020-09-10 14:38:09 -05:00
Andrew Makousky
2bce9ed244
Finished test bench implementation, fixed firmware bugs found during
...
simulation, document technical limits.
2020-09-10 05:07:27 -05:00
Andrew Makousky
6c1b2ba7d9
Fix bug with calling decodePramCmd(), improve comments.
...
Other minor code cleanup.
2020-09-05 18:50:28 -05:00
Andrew Makousky
6328347304
Improve MacRTC.c file header.
2020-09-05 18:04:06 -05:00
Andrew Makousky
043f815c4c
Be defensive with holding RTC output on last cycle.
2020-09-05 17:48:46 -05:00
Andrew Makousky
e2483ddd59
Remove unnecessary pull-ups on inputs, open-drain output.
2020-09-05 15:49:53 -05:00
Andrew Makousky
652aab70ab
Formatting improvements.
2020-09-05 15:10:28 -05:00
Andrew Makousky
bb3bc8bc62
Strip down to the bare minimum interrupt disables.
...
This will hopefully prevent potential issues of not being able to update
the 1-second counter correctly.
2020-09-05 15:03:04 -05:00
Andrew Makousky
76760be8e6
Several improvements after testing.
...
* Convert to C.
* Add simavr test/debug code.
* Fix/improve 1-second timer pin.
* Do not modify lastSerClock in clearState().
* Add pin change interrupt for serial clock, sleep during serial clock
edges, build out PCINT0 ISR to handle watching for multiple pin
changes on the same ISR.
2020-09-05 14:56:08 -05:00
Andrew Makousky
9fe3c780dd
Change to C source file, add simavr debug code.
2020-09-05 02:50:55 -05:00
Andrew Makousky
1e91a8b426
Finally feature-complete code for ATTiny85 RTC.
...
The code compiles, but there is NO GUARANTEE it is actually functional.
The code still needs to be tested and could use a bit of careful reading
code review to certify that it does not contain errors.
2020-09-04 22:49:17 -05:00
Andrew Makousky
d18cff3e80
Add public domain release notice to MacRTC.cpp.
2020-09-04 17:29:06 -05:00
Andrew Makousky
fd916b3d5c
Eliminate arduino_sdef.h, add Group data addresses, other cleanup.
2020-09-04 17:21:25 -05:00
Andrew Makousky
1f8d0f8163
Fix a bunch of issues with ATTiny85 RTC implementation.
...
Decouple from Arduino libraries, use a small header file instead.
Now compiles with plain avr-gcc. Still needs more work.
2020-09-04 06:28:46 -05:00
Andrew Makousky
097581b80a
Reference Google drive parent directory.
2020-09-01 23:01:44 -05:00
Andrew Makousky
b4c3ebd32a
Add shipping cardboard box design.
2020-09-01 00:51:49 -05:00
Andrew Makousky
83e915f885
Symlink for macse.
2020-08-26 17:04:57 -05:00
Andrew Makousky
86767719c7
Remove placeholder README.md, use submodule instead.
2020-08-26 16:34:10 -05:00
Andrew Makousky
ba54302d2b
Plan out big audacious Macintosh family designs goal.
2020-08-26 16:28:15 -05:00
Andrew Makousky
4b8dad3033
Note reserved status of "*EAREN" signal.
2020-08-10 14:33:54 -05:00
Andrew Makousky
9e63683576
More likely 1/6W.
...
Compare with PSU schematic and the blurry message looks more convincing.
2020-08-09 14:12:23 -05:00
Andrew Makousky
6ca3b92810
Document "*EXT.DTK" signal properly.
...
PDS slot pinouts have now been verified, remove TODO note.
2020-08-08 19:05:41 -05:00
Andrew Makousky
1a65308a45
Do not link/commit the PDF.
2020-08-08 00:01:23 -05:00
Andrew Makousky
7352d25cb2
Retrace looking really good now, more text facts added.
2020-08-07 23:11:53 -05:00
Andrew Makousky
217bf4e835
Fill in note line based off of similar schematic.
2020-08-07 06:23:16 -05:00
Andrew Makousky
7d7a495cae
Comments on BBU functions and signal discipline.
2020-08-07 04:48:07 -05:00
Andrew Makousky
3295dde1f7
It's an F, not a 2.
2020-08-07 02:39:24 -05:00
Andrew Makousky
02000977b7
Fix ER -> BR CPU signal name.
2020-08-07 01:46:47 -05:00
Andrew Makousky
42d38b913a
Right, not left.
2020-08-07 01:04:44 -05:00
Andrew Makousky
1672ca79bd
Fix RAM jumper text.
2020-08-06 23:09:36 -05:00
Andrew Makousky
b2a8715ead
Remove red markers after verifying logic of F257 A lines.
2020-08-06 21:48:54 -05:00
Andrew Makousky
a96a03d889
Fix errors on F257 address labels.
2020-08-06 21:11:22 -05:00
Andrew Makousky
7472497a96
Placeholder for bare MLB PCB photos source.
2020-08-06 19:33:46 -05:00
Andrew Makousky
f9e7b41038
Correct refences to page 2 and 3.
2020-08-06 18:56:36 -05:00
Andrew Makousky
0de2c69b3b
Correct pinout of RAM SIMMs.
2020-08-06 18:45:12 -05:00
Andrew Makousky
a9489dde08
Punctuation fixes.
2020-08-06 18:15:09 -05:00
Andrew Makousky
233cca5a98
Link to retrace in deeper README.
...
Remove redundant quotes.
2020-08-06 18:12:33 -05:00
Andrew Makousky
4ce5af75c2
Initial commit
2020-08-06 18:06:49 -05:00
