J. David Bryan via cctalk wrote:
>
> ...contains the theory of operation of the CPU. Subsection 4.2 is the
> "General Instruction Set Description." The BASIC interpreter is contained
> in ROM providing 20-bit instructions that are executed by the hardware.
>
> The "Wang 2200 CPU schematics" here:
>
> http://www.wang2200.org/schematics.html
>
> ...show that the ALU is a single 74181, implying essentially a 4-bit
> processor.
>
> -- Dave
Dave a Z80 has an 4 Bit ALU, but isn't essentially a 4-bit processor.
Regards,
Holm
BTW: I have two Wang 2200 waiting in my garage until I have time to look
at them...
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