Semantic of cjump on T414

Thread View: comp.sys.transputer

1 messages

[T] Back to Threads [V] Tree View [G] Group Articles

1 total messages Started by Erick Bizouarn Thu, 28 Jul 1988 13:54

#2152

Author: Erick Bizouarn
Date: Thu, 28 Jul 1988 13:54

29 lines
1100 bytes

1.	Answer to jjk@advdev.Cambridge.NCR.COM (Joe Kulig) :

The "unconditional i/o " is a process with send and receive primitives, without
any ALT process. The send primitives must know if the receiving process is an
"unconditionnal i/o" process or not (ALT process).
In an "unconditionnal i/o" the second process executes the message transfert;
but in an "alt communication" the transfert is always done by the alt process 
Wptr[-2] may be used to store this information.

2.	the CJUMP problem in T414

The CJ instruction does not pop the condition if it is false. This seems
to be a bug,isn't it??

example:
_bug:
	ldc	10
	ldl	1  ;(parameter)
	cj	L1
L1:
	ret

This function returns 0 if the parameter is 0 and 10 otherwise.


	Thanks for any help.

Erick

Thread Navigation

This is a paginated view of messages in the thread with full content displayed inline.

Messages are displayed in chronological order, with the original post highlighted in green.

Use pagination controls to navigate through all messages in large threads.

Back to All Threads