Re: swiftx: 8051 gp bits

They are commonly referred to as "The Naughty Bits" in many episodes of Monty Python. In Marine Research applications, they are called "The General Porpoise Bits".

But seriously folks, I think he meant this:
   There are 128 general-purpose bit-addressable locations at byte addresses 20H through 2FH (8 bits/byte X 16 bytes = 128 bits). These addresses are accessed as bytes or as bits, depending on the instruction. For example, to set bit 67H, the following instruction could be used:
SETB 6Th
((Shamelessly quoted from http://www.ccse.kfupm.edu.sa/coe/8051fv1/8051_l.htm

> -----Original Message-----
> From: Leon Wagner [SMTP:leon_at_forth.com]
> Sent: Friday, September 26, 2003 3:19 PM
> To: sftalk_at_forth.com
> Subject: [sftalk] Re: swiftx: 8051 gp bits
>
> What's a "general purpose" bit?
>
> > -----Original Message-----
> > From: sftalk-bounce_at_forth.com [mailto:sftalk-bounce_at_forth.com]On Behalf
> > Of chuck_at_sanna.com
> > Sent: Friday, September 26, 2003 2:58 PM
> > To: sftalk_at_forth.com
> > Subject: [sftalk] swiftx: 8051 gp bits
> >
> >
> > Hello,
> >
> > I'm unable to find any info in the docs or source for allocating and using
> > general purpose bits in the 8051 product.
> >
> > I found the setb instruction, but the examples only applied to the special
> > function registers, yet it is capable of setting the general purpose ones
> > as well, I just don't know how to get the assembler or compiler to
> > allocate them.
> >
> > Thanks,
> >
> > Chuck
> >
> >
> >
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Received on Fri Sep 26 2003 - 16:39:14 PDT