NuXT

NuXT Motherboard (v1.0)

Features

8088 and NEC V20 support
8087 co-processor support
4.77MHz, switchable to 9.55MHz with Ctrl-Alt-+
2x64K ROM, switchable with DIP switch, writable
800K SRAM
- 640K conventional
- up to 160K UMBs (128K max when using VGA)
- Configured DOS 6.22 uses only 10K conventional!
Highly-compatible TVGA9000i SVGA
HD Floppy controller, with FM support
Bootable CF Card Interface - 64MB CF Card Included! Loaded with DOS and ready to go.
ROM Socket, supporting 8K and 32K ROMs, writable
16C550 Serial Port
PS/2 Keyboard Port
ATX Power Input. Generates own -5V
4 x 8-bit ISA Slots
Front-panel connector for modern cases
Highly configurable via DIP switches. All onboard peripherals can be disabled

VGA disable fixed
Floppy disable fixed
Serial circuitry moved to improve reliability
Re-arranged board to allow 16-bit cards in 3 of the 4 slots instead of 1 of the 4

Changes from Version 1.1 include:

Black PCB
Memory address decoder SPLD replaced with discrete logic.
More documentation text on the back
Changed to 4-layer PCB to make routing easier.
moved RS222 transceiver next to the UART, and routed to the serial port all 9 wires including GND, alone as if it was a serial cable.