Modern Amiga 1200 clone implementation using Cyclone V FPGA
@o: output @i: Input 3v3: +3.3V logic 1v8: +1.8V logic
- Boot strap (flash): IO0@i, EN@i, U0RXD@i3v3, U0TXD@o3v3
- TCPC
- Negotiate SINK 5V@3A + 4-lane DP Alt Mode
- I2C Controller: IO21/SDA, IO38/SCL
- DVI-A/VGA output:
- Red[0,1] = [IO10,IO11]@o3v3
- Green[0,1] = [IO45,IO40]@o3v3
- Blue[0,1] = [IO46,IO39]@o3v3
- HSYNC = IO47@o1v8
- VSYNC = IO48@o1v8
- DDR
- Power Good: IO2@o3v3
- I2C same pin as controller
- WiFi SLiRP modem, UART1
- TxD = U1TXD@o3v3
- RxD = U1RXD@i3v3
- KVM
- User Switch: IO3@i falling edge
- Port selection: IO5@o3v3, L = USBC DP, H = FPGA DP
- FPGA
- Temp sensor interupt alaram IO4@i3v3 falling edge
- Cooling Fan: SENS = IO7@i3v3, PWM = IO8@o3v3
- I2C peripheral: IO41/SCL, IO42/SDA
- Expansion port:
- ADC1_CH8
- A500 Keyboard:
- CLK = IO12@o3v3
- DATA = IO13@i3v3
- RST = IO14@o3v3
- LED STATUS = IO15@o3v3
- LED INUSE = IO16@o3v3
- DP on HDMI Flext
| Net | FPGA Pin |
|---|---|
| DP0- | AD11 |
| DP0+ | AD10 |
| DP1- | AH5 |
| DP1+ | AH6 |
| AUX- | AE7 |
| AUX+ | AF6 |
| HPD | AF11 |
- DP on GPIO_1 header
| Net | FPGA Pin |
|---|---|
| DP0- | AA15 |
| DP0+ | Y15 |
| DP1- | AF28 |
| DP1+ | AF27 |
| DP2- | AH27 |
| DP2+ | AG28 |
| AUX- | AD26 |
| AUX+ | AE25 |
| HPD | AC24 |
| LP | AG26 |
- DVI-D
| Net | FPGA Pin |
|---|---|
| D0+ | AG25 |
| D0- | AF25 |
| D1+ | AH24 |
| D1- | AG24 |
| D2+ | AG23 |
| D2- | AF23 |
| CK+ | AH23 |
| CK- | AH22 |
| HPD | AG21 |
- SNAC on HDMI
| Pin | FPGA Pin |
|---|---|
| 1 | AH9 |
| 2 | AG11 |
| 3 | AF15 |
| 4 | AH11 |
| 5 | AH12 |
| 6 | AG16 |
| 7 | AF17 |
| 8 | AD4 |
- I2S for Line Out
| Net | FPGA Pin |
|---|---|
| DIN | AC4 |
| LRCK | AG8 |
| BCK | AG10 |
| MUTE | AH8 |
- SliRP UART
| Net | FPGA Pin |
|---|---|
| RXD | U9 |
| TXD | V10 |
- I2C Controller
| Net | FPGA Pin |
|---|---|
| SDA | AG9 |
| SCK | U14 |
- Input Switches
| Net | FPGA Pin |
|---|---|
| OSD | AF13 |
| RST | AG13 |
| USER | U13 |
- LED outputs
| Net | FPGA Pin |
|---|---|
| PWR | AA23 |
| USR | AE26 |
| DSK | Y16 |
Some sections of the hardware design were inspired by the following projects.
- Terasic DE10-Nano
- QMTECH_Cyclone_V_SoC_KFB
- Hardware_MiSTer: Daughter boards Hardware addons for MiSTer
- PicoDVI: Bitbanged DVI on the RP2040 Microcontroller
- SNAC: Accessory converter for MiSTer
- DE10Jamma JAMMA interface for DE10
- DPSwitch: a simple KVM-style device
- amigakb: Arduino Amiga keyboard interface
- amiga-keyboard: Mechanical Replacement Keyboard for Amiga 500 and 1200
- Amiga1200-Plus: a re-implementation of the Amiga 1200 board
- Amiga-Keyboard: map of Commodore Amiga keyboards
The hardware files in this repository are released under Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
