General Information
The RCA Microboard Computer Development System (MCDS) is one of several models of the COSMAC 1802 development kits sold by RCA. All information to build this emulator was provided by Herb Johnson his findings can be found on his RCA Microboard Computer Development System site.
The emulation in Emma 02 includes 33 kilobytes of RAM, 20 kilobytes of ROM. ROM Software includes a resident monitor program UT62, RCA BASIC3, MCDS Tape Editor and the MDCS Assembler.
On start-up the MCDS will run UT62, command summary for the UT62:
- A: Assembler
- B: BASIC
- C: Read & display from tape
- D: Memory Display
- E: Tape Editor
- F: Memory Fill
- I: Memory Insert
- J: Rewind
- M: Memory Move
- P: Program Run
- R: Read from tape
- S: Memory Substitute
- W: Write to tape
Manuals for the Netronics Assembler and Tape Editor are available and similar to the MCDS version.
Technical specifications
Clock: 2.0 MHz
Memory:
33 KB RAM
20 KB ROM
Screen shot
MCDS running RCA BASIC3 on a video terminal.
Links
Other information about the RCA Microboard Computer Development System:
- Herb Johnson's information about the RCA Microboard Computer Development System
Main Features RCA Microboard Computer Development System Emulator
- Adjustable speed, boosting the speed of the MCDS beyond 2.0 MHz!
- Tape features (wav file and real cassette support) including a Turbo version
- Direct MCDS memory access to load and save software from the PC hard disk via intel hex or binary files
- Terminal simulation (DEC VT-52 and VT-100)
- Support for Printer simulation including possibility for sending the output to any printer you own or to a file
- Video screen dump to a file (BMP, JPEG, PNG or PCX image)