[comp.graphics] 680x0 vs. 80x86

mcripps@mtuxo.att.com (XMP12-M.CRIPPS) (08/31/88)

In article <386@snjsn1.SJ.ATE.SLB.COM>, greg@bilbo (Greg Wageman) writes:

> With the 80x86, the segment registers are tied up in the fashion of
> base registers, and are unavailable for general purpose use, reducing
> the general-purpose register count available to the programmer.
>     ^^^^^^^^^^^^^^^

80x86 general-purpose registers?  There are none!
	AX - accumulator
	BX - indexing
	CX - loop counting
	DX - high order accumulator & port register
	SI & DI - index
	BP - frame pointer
	SP - stack pointer
	CS, DS, ES, SS - segment regs
	and of course, the flags
That's all folks.  Any of these look general purpose to you?

Mike Cripps
mtuxo!mcripps