Ported from Neptuno board test https://github.com/neptuno-fpga/board_test
Tested with PS2 & R2R VGA adapter (333) https://www.waveshare.com/vga-ps2-board.htm
Tested with 32 MB SDRAM board for MiSTer (extra slim) XS_2.2 (see connections)
Sound tested with Atlas (J2:1 left ye, J2:3 right gn)
PS2 mouse tested with Atlas board
Changelog:
- v0.1 VGA only. SDRAM working
- SDRAM test
- SD slot test
- Sigma delta sound test
- VGA / RGB PAL & NTSC test
- Keyboard & mouse tests
Joystick 1 & 2 test (2 buttons for now)Addon SRAM test (1024x16)
- Pin definitions
- VGA 666 to 333
