EXPansion port breakout
- smokku
I needed something to hook into expansion port to test it.
Used for early experiments with expanding core machine capabilities.
EXPansion port exposes the following functions:
- 8-bit data bus (D0-D7)
- 8-bit address bus (A0-A7)
- CPU Control signals:
PHI2, /IRQB, /NMIB, /VAB, R/WB, /RESB, /ABORT, RDY, BE
- 4× I/O enable signals (IO0_EN-IO3_EN)
- 4× I/O interrupt signals (IO0_INT-IO3_INT)
- +5V, +3.3V and GND power supply
- I²C bus (SDA, SCL)
- UART (TX, RX)
- Audio output (MIX_OUT_L, MIX_OUT_R)
- Audio input (EXT_IN_L, EXT_IN_R, AUDIO_EXT3)
- RGB LED (WS2812B) data line
