The MTK-85 is a low-cost single board computer designed for self-learning the 8085 Microprocessor. The kit enables studying from low level programming with direct machine code entering to high level programming with PC tools easily.
A nice feature, single-step running, helps students learn the operation of microprocessor instructions quickly and clearly. The user registers provide simple means to verify the code execution. Using a PC as the terminal, the MTK-85 can receive the Intel hex file and disassemble the machine code into 8085 instructions.
The MCS51 architecture consists, of the following features:
o Eight-bit CPU with registers A(accumulator and B
o Sixteen-bit program counter(PC) and data pointer(DPTR)
o Eight-bit program status word(PSW)
o Eight-bit stack pointer(SP)
o Internal ROM(8051) or EPROM(8751) or EEPROM(8951)
o Internal RAM of 128 bytes:
0 Four register banks each containing eight registers
0 Sixteen bytes, which may be addressed at the bit level