General Information
The Netronics Elf II was introduced around 1977 and is in a way quite similar to the Cosmac Elf, however the Elf II has 5 expansion slots! Available accessories included the giant board (ROM monitor and I/O), 4 KB (static) RAM board, colour board, power supply and case. RS-232 terminals could be interfaced with the unit.
In 2024 the AVI Elf II rev D Variant project was started, this is a re-creation of the Elf II and diferent expansion boards, designed by the late Ed Keefe. I have emulated the FULL BASIC Math/ROM board from this project in Emma 02 (beta and formal release will follow)
Technical specifications
Clock: 1.76 MHz
Memory: 256 Bytes RAM
Video: CDP1861 and 2 TIL311 (for two character hexadecimal display)
Sound: None
Keyboard: 74C923, 20 Key Encoder (for hexadecimal keypad)
Screen shot
Netronics Elf running RCA Basic on a DEC VT-100.
Links
Other information about the Elf II:
- Netronics Elf II files on Groups.io
- Ed’s Netronics ELF II Restoration project
- Herb’s Netronics ELF II Recovery project
- 1978 Electronic Experimenter's Handbook Build a Personal Microcomputer for $100
- Netronics Elf II on Wikipedia
Main Features Netronics Elf II Emulator
- Adjustable speed, boosting the speed of the Netronics Elf II beyond 1.76 MHz!
- Tape features (wav file and real cassette support) including a Turbo version and automatic tape handling for Quest Super BASIC (CLOAD, CSAVE, DLOAD and DSAVE) as well as Tiny BASIC (LOAD and SAVE) commands
- Direct Netronics Elf II memory access to load and save software from the PC hard disk via intel hex, binary, '.super' (for Quest Super Basic) and '.rca' (for RCA Basic) files
- Terminal simulation (DEC VT-52 and VT-100)
- Video support for CDP1861 (Pixie), MC6845, MC6847, TMS 9918 and Intel 8275 all with zoom and full screen option by pressing F3
- Keyboard support for Hex keypad, PS2 and Ascii keyboard
- IDE Hard Disk and FDC support
- RAM extension up to 64KB, EMS Memory expansion (512 KB) or Memory Mapper (1MB)
- Sound support for 'Q flag' connected speaker
- 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)
- 1805 CPU Mode