30 Sep
2026
30 Sep
'26
11:57 a.m.
Lars Brinkhoff wrote:
Paul Koning wrote:
The Motorola 68000 has the instructions ABCD, NBCD, and SBCD for
decimal arithmetic.
The 6502 has a flag bit which allows the programmer to specify whether the
ADC and SBC instructions operate on binary or BCD values.
What was the question again?
Regards,
Peter Coghlan.
... Like
what machines other than IBM had binary and decimal computing?
If you meant
"had machine instructions both for decimal and for binary
arithmetic", the answer includes the PDP-11 and VAX, and I think the
Intel 4004 had instructions used as building blocks in decimal
arithmetic.