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artemisamsx
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artemisa
Schematics, PCB designs and HDL simulations to build a 8-bits MSX computer
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#155
Cptscorcher
opened
2 weeks ago
2
Custom power supply
#154
apoloval
opened
2 years ago
40
Produce stereo sound outputs
#153
apoloval
opened
3 years ago
0
Use 74145 as decoder for keyboard row select
#152
apoloval
opened
3 years ago
0
Remove HCT buffers for the CPU
#151
apoloval
opened
4 years ago
0
Introduce ±12V power supply rails
#150
apoloval
opened
4 years ago
15
Suggestion to add license
#149
Redlolz
closed
4 years ago
2
Replace TH resistor networks by a SMD one
#148
apoloval
opened
4 years ago
0
Fix pads too close in PS2 connector
#147
apoloval
closed
4 years ago
1
Remove ROM page selection jumpers
#146
apoloval
closed
4 years ago
1
Use SOIC packages for the remaining logic devices
#145
apoloval
closed
4 years ago
1
Research how to provide a PS2 keyboard interface based on 74670
#144
apoloval
closed
4 years ago
13
Replace most decoding logic by ATF22V10 GAL
#143
apoloval
closed
4 years ago
1
Write GAL equations for decoding logic
#142
apoloval
closed
4 years ago
3
Replace footprints of resistors and ceramic capacitors by 1206 packages
#141
apoloval
closed
4 years ago
1
Use PLCC44 version of Z84 CPU
#140
apoloval
closed
4 years ago
1
Remove 74HC244 buffers from address and control bus
#139
apoloval
closed
4 years ago
1
Use a CD74HC154 to decode KBROWs coming from PPI
#138
apoloval
closed
4 years ago
1
Use an oscillator instead of a crystal circuit
#137
apoloval
closed
4 years ago
2
Use external wait and external int as pulled-up open-collector wires
#136
apoloval
opened
4 years ago
1
Use PLCC version of SST39SF010A as ROM
#135
apoloval
closed
4 years ago
1
Use AS6C1008 as main RAM
#134
apoloval
closed
4 years ago
1
Use CS82C55 as PPI
#133
apoloval
closed
4 years ago
1
Try an alternative scan code set to support three key hits
#132
apoloval
closed
4 years ago
2
User manual and service manual return 404's
#131
cbmeeks
opened
4 years ago
1
Assembly instructions for Artemisa Motherboard Mk.I
#130
apoloval
opened
4 years ago
0
Assembly instructions for GFX9918
#129
apoloval
opened
4 years ago
0
Assembly instructions for PS2 Keyboard adapter
#128
apoloval
opened
4 years ago
0
Prototype PS2 keyboard adapter fails
#127
apoloval
closed
4 years ago
3
Detect keyboard disconnections and reset upon reconnect
#126
apoloval
closed
4 years ago
3
Combination of arrow up, left and space doesn't work
#125
apoloval
closed
4 years ago
1
External VDP must not be connected to GND
#124
apoloval
closed
4 years ago
1
Improve build chain of ROM chips
#123
apoloval
closed
4 years ago
1
Place a power on switch in the board
#122
apoloval
opened
4 years ago
0
Replace power-on reset circuit by a single IC
#121
apoloval
opened
4 years ago
1
Replace external oscillator circuit by a built-in clock IC
#120
apoloval
opened
4 years ago
0
Scaffolding of GFX9920
#119
apoloval
closed
4 years ago
1
PS2 Keyboard PCB corners must be rounded
#118
apoloval
closed
4 years ago
1
Dimensions of PS2 Adapter case are incorrect
#117
apoloval
closed
4 years ago
1
Right corners of PCB must be rounded
#116
apoloval
closed
4 years ago
1
Provide CAD designs for Motherboard case
#115
apoloval
closed
4 years ago
1
Annular ring of slot connectors is too small
#114
apoloval
closed
4 years ago
1
Dimensions of MSX cartridge slots are wrong
#113
apoloval
closed
4 years ago
2
Provide CAD designs for PS2 Keyboard case
#112
apoloval
closed
4 years ago
1
Adapt board settings to JLCPCB capabilities
#111
apoloval
closed
4 years ago
1
Replace 27pF capacitors by 56pF
#110
apoloval
closed
5 years ago
1
Replace 22pF capacitors by 33pF
#109
apoloval
closed
5 years ago
1
Wrong key mapping issues
#108
apoloval
closed
5 years ago
1
Vias for power tracks are too small
#107
apoloval
closed
5 years ago
1
C7 (power-on reset) value is too low
#106
apoloval
closed
5 years ago
1
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