4-bit processor simulated by 16-bit MCU. Registers, flags, ALU, SP, two Data Memory pages, current Program Word and some internal logic states are displayed in binary form, with 272 LEDs.
- A total of 31 instructions
- Processing speed: adjustable (in runtime) from 300,000 ips to 0.5 ips, plus Single Step
- Program Memory: 4096 pgm words × 12 bits
- Data Memory: 256 nibbles (32 visible in real time), including 16+6 SFRs and 10 GPRs
- 5-deep Subroutine Stack
- Instructions are 4-bit aligned, visible on 3×16 LED disassembler display
- Three ways of programming:
1. Direct, using on-board buttons in Binary or Select mode
2. Indirect, using 2-pass assembler, created by Mike Szczys
3. Save/Load to/from external file or other unit (using serial I/O) or internal flash
- Bootloader for firmware update
- I/O port with 4-bit IN and 4-bit OUT
- 3V (2×AA) Battery supply
- SAO port with Serial I/O
- Detailed User Manual
- Dimensions 17.5×9.5 cm
INSTRUCTIONS SUPPORTED IN DIRECT MODE (Simple mode, without programming, without Data memory usage and without indirect addressing, used for basic learning and viewing processor registers and ALU states)
Note: This is beta version of the manual. Please allow language issues (English is not my native language)
Adobe Portable Document Format -
646.12 kB -
11/10/2021 at 07:06
I look forward to buying one of these in the near future! Absolutely awesome. Voja's projects are inspirational and I learn a lot from them. This will go to the left of my Heathkit Microcomputer Learning System, which looks forward to a Monster 6502 showing up on the right side some day!
I look forward to buying one of these in the near future! Absolutely awesome. Voja's projects are inspirational and I learn a lot from them. This will go to the left of my Heathkit Microcomputer Learning System, which looks forward to a Monster 6502 showing up on the right side some day!