27 Oct
2010
27 Oct
'10
2:56 p.m.
On 27 Oct 2010 at 21:12, Tony Duell wrote:
Except that the many of the PDP11 instructions are
easy to decode if
written in octal (4 bit opcode, 3 bit addressing mde, 3 bit register
select, 3 bit addressing mode, 3 bit register select). I would hate to
have to work with PDP11 machine code in hex...
...and octal makes it so easy to read packed BCD.
I think the opcode subfield length determining the display radix of a
system is a red herring. Because the Atmel AVR microcontrollers have
32 8-bit registers, should base-32 be used as the display radix?
--Chuck