6502 комп на FPGA с VGA и PS/2-клавой

[Shaos]

https://github.com/emeb/up5k_vga

• Up to 52kB SRAM with optional write protect (using two of the four available SPRAM cores)
• 8 bits input, 8 bits output
• 115200bps serial I/O port
• 800x600 60Hz 64 color VGA with text/glyph, 16-color medium rez, 2 color hi-rez, 32kB video RAM (2 16kB pages) and original OSI 2kB character ROM
• 2kB ROM for startup and I/O support
• 8kB Ohio Scientific C1P Microsoft BASIC loaded from spi flash into protected RAM
• SPI port with access to external flash memory
• LED PWM driver
• PS/2 Keyboard port with tx and rx capability
• 4-voice sound generator with 1-bit sigma-delta output