The USBSIMM can be used as a means of interfacing various custom circuits
to a modern PC. USBSIMM contains an advanced 8051 with a USB serial interface
engine. The microcontroller has 8k bytes of RAM internally, and is supplemented
with 32k bytes of external RAM. The microcontroller sports two serial
ports, several timers, an I2C engine, and 16+ port lines. This makes for
a rather powerful SimmStick or small embedded control computer even if
the USB port is used only for development. The USBSIMM
is produced in the U.S. but shipped worldwide.
BOB-II is an On-Screen Display (OSD) module
that displays up to 308 characters on standard NTSC or PAL (optional) video
monitors. It generates video on-board, or automatically gen-locks to your
video source and superimposes characters on the image. Simple commands
and printable ASCII text control BOB-II through a serial data link at 2.4~19.2Kbps.
Full details at: Decade Engineering
Note: BOB-II is not SimmStick pin-compatible.