7 May
2025
7 May
'25
8:37 p.m.
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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