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WIP

B1200

Modern Amiga 1200 clone implementation using Cyclone V FPGA


EC (ESP32) Functions and pin assignments

@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

FPGA (Cyclone V) Functions and pin assignments

  • 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

Thanks/Credit

Some sections of the hardware design were inspired by the following projects.

License

The hardware files in this repository are released under Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)

licensebuttons by-nc-sa