Building a Z-80 (64bit!!!)

From: Allison J Parent <allisonp_at_world.std.com>
Date: Thu Oct 22 12:30:14 1998

< But just tell me where 32 Bit instructions can be usefull ?
< In fact, I can't think of any part inside a BASIC. But the
< higher clockrates are a nice thing - and maybe the z180 for
< 3.0 style bankswitching.

They can address the full 32bit address space (without banking) and the
z380 adds a host of addressing modes not in the z80 like 32bit indirect,
PC relative and stack relative with long pointers. Also MUL, DIV and a
handfull of other nice instructions that would sharply speed on the math
functions. Also there are 4 sets of registers compared to the dual set
of the z80/z180.

Allison
Received on Thu Oct 22 1998 - 12:30:14 BST