c3c105980e
cpld: refactor video color signal generation
...
assume 28.375MHz Y2 by default
2022-07-09 21:40:03 +03:00
eb176e4c78
cpld: minor refactor
2022-07-09 21:37:00 +03:00
35cea4cd1f
update 3d view
2022-06-19 12:09:21 +03:00
04c73e37b9
merge assembly, bom and schematic into one pdf
2022-06-19 12:08:52 +03:00
1bb8dbee53
update gitignore
2021-11-08 11:41:52 +03:00
fbae93da65
fix #7ffd port decoding
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This commit improve compatibility with bunch of software like:
- Eye Ache 2 by Code Busters
- 70908 by Scoopex (trd version)
- Void by Invaders (RU version)
2021-04-25 12:30:28 +03:00
28dee07e0c
chroma_gen: add comment how to calculate carrier
2021-04-25 12:25:50 +03:00
18ce943940
add photos
2021-04-08 15:17:31 +03:00
cad911ec70
gitignore, gitattributes: add kicad 6 entries
2021-04-08 15:16:55 +03:00
209a1b5e16
chroma_gen: handle new clock frequencies
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28.375 MHz (best result, recommended to use instead of 16 MHz)
28.63636 MHz
35.46895 MHz
2021-03-18 21:40:53 +03:00
b156edf271
pcb rev.A: add R49=3.6k to errata
2020-10-29 22:18:16 +03:00
96fd68f076
cpld: do not stop screen render on reset
2020-10-26 21:56:58 +03:00
e2ef8d7c22
update cpld firmware
2020-10-12 21:47:02 +03:00
72ba1ee636
update readme
2020-10-12 21:47:02 +03:00
7d2f245ab8
pcb rev.A: add errata
2020-10-12 21:47:02 +03:00
3dc38d3f50
cpld: tune video generation to improve quality
2020-10-12 21:47:02 +03:00
8c718a5158
clocks.sdc: slightly tune chroma clock just to be safe
2020-10-12 21:47:02 +03:00
54709babeb
git: fix CRLF
2020-10-12 21:47:02 +03:00
6369747d58
rewrite chroma_gen in verilog
2020-10-12 21:47:02 +03:00
7d4d9fd525
remove util.vh
2020-10-12 21:47:02 +03:00
9bb8d83691
pcb: move old files to rev.A folder
2020-10-12 21:46:56 +03:00
8e78affba3
fix missing tape loading sound
2020-08-15 18:36:18 +03:00
105b24ffa4
update firmware
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1. quartus 13 may be used for build now;
2. fix small border offset;
3. fix too fast flashing with attribute bit 7.
2020-08-15 16:24:34 +03:00
1696b14cae
add testbench
2020-08-15 16:16:55 +03:00
ef8472f1a0
fix github language detector
2020-07-29 18:57:25 +03:00
acbd0abd55
update readme
2020-07-26 13:56:56 +03:00
63b82d6f61
fix github language detector
2020-05-17 13:41:19 +03:00
98a922cf72
add delivered files (gerbers, firmware binary, etc)
2020-04-19 14:07:41 +03:00
2c0375c359
add readme
2020-04-19 14:07:41 +03:00
38be2947ce
add rom
2020-04-19 14:07:41 +03:00
15456496ee
add pcb
2020-04-19 14:07:39 +03:00
6eef135e9e
reorganize repository
2020-04-19 14:07:19 +03:00
c6a53f0618
add license
2020-04-19 11:33:31 +03:00
bacedc947f
cleanup quartus project files
2020-04-19 11:33:31 +03:00
dff7f28b0e
some refactor. correct timings
2020-04-19 11:33:31 +03:00
f8a65b5ddb
working version
2020-02-16 22:14:12 +03:00
04c681291b
initial
2020-02-16 22:12:30 +03:00
