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Computer Main Features

• 12-bits architecture clocked at 12 MHz.


• Console support for Single-Step execution, Halt-On-Fail and Halt-On-Break-Point


• One Accumulator (A), three aux registers (B, C, D) and one Index register (IX).


• ALU supports 2's complement and BCD arithmetic.


• Fast Ram (35ns) organized in 4K by 12-bit words.


• Memory space broken into 32 pages (128-words each) for direct addressing.


• Page-Zero direct addressing


• Indirect addressing via any of the registers: A,B,C,D,IX,PC,SP.


• Average instruction completes (fetch + exec) in 3 clock periods (250 ns), equivalent to 4 million instructions per second.


• Instruction decoding is made with hard-wired logic (no micro-programming)


• I/O accessible via 16 channels (no external bus)


• Memory expansion possible through RAM-DISK peripheral via I/O channel.