SVI-3x8-PicoExpander
fitch
SVI-3x8 PicoExpander project is a memory, disk and tape expansion emulator for Spectravideo 318 and 328 which uses a Raspberry Pico 2 W microcontroller board to emulate devices in the expansion bus.
Components (7)
| Reference | Value | Description |
|---|---|---|
| U1,U2,U4,U5 | 74LVC245A | 8-Bit Single-Supply Bus Transceiver With 5V tolerant input voltage and 3-State Outputs 24mA, TSSOP-20 |
| U3 | 74HC14 | Hex inverter schmitt trigger |
| A1 | Raspberry Pi Pico 2 W | Versatile and inexpensive wireless microcontroller module powered by RP2040 dual-core Arm Cortex-M0+ processor up to 133 MHz, 264kB SRAM, 2MB QSPI flash, Infineon CYW43439 2.4GHz 802.11n wireless LAN; also supports Raspberry Pi Pico 2 W |
| C1-C5 | 0.1μF | Unpolarized capacitor |
| J1 | SVI-3x8 expander bus edge connector | Generic connector, double row, 02x25, odd/even pin numbering scheme (row 1 odd numbers, row 2 even numbers), script generated (kicad-library-utils/schlib/autogen/connector/) |
| R1 | 10kΩ | Resistor |
| SW1 | Reset | Push button switch, generic, two pins |