Delayed Memory Writes

Delayed Memory Writes

[Joseph A]

When I write a line of code such as
(set (delay 2 (mem SI r)) a)
or
(set (delay 2 (reg SI h-memory r)) a)
I get the error "ERROR: Unbound variable: set".  Is there some special
notation for delayed memory stores, or a different way to accomplish this?

Thanks
Joseph
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Re: Delayed Memory Writes

[Frank Ch. Eigler]

Hi -

> When I write a line of code such as
> (set (delay 2 (mem SI r)) a)
> or
> (set (delay 2 (reg SI h-memory r)) a)
> I get the error "ERROR: Unbound variable: set".  Is there some special
> notation for delayed memory stores, or a different way to accomplish this?

It nests the other way:

   (delay 1 (set FOO BAR))

- FChE

Re: Delayed Memory Writes

[Joseph A]

Frank Ch. Eigler wrote:
> 
> 
> It nests the other way:
> 
>    (delay 1 (set FOO BAR))
> 
> - FChE
> 
> 
When nested this way I get the error 
"ERROR: In procedure string-append:
ERROR: Wrong type argument (expecting STRINGP): set"

The code 
(set (delay 2 (reg SI h-gr r)) a)
works fine, as do delayed sets of hardware other than memory.  The error
only appears when I try to do a delayed memory set.  The mt port uses delays
nested in this manner, and the sh port uses delays nested in the manner you
suggested.  I'm a little confused.  Are they both valid?  Perhaps I'm using
an old version?

Thanks
Joseph
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