difference
Kind Regards
John
From: Paul Gilmartin <0014e0e4a59b-dmarc-requ...@listserv.uga.edu>
To: ASSEMBLER-LIST@LISTSERV.UGA.EDU
Date: 11/03/2017 23:35
Subject: Re: 50 year old assembler code still running.
Sent by:IBM Mainframe Assembler List
On 2017-03-
DOS/360 had:
- typically 32K or 64K core
- no R15 = EP, no R14 = ret.addr no R13 = SA
- right or wrong, I remember R0 or R1 for UPSI switches
- no program relocation at LOAD time
- LE resolved A(..) to real addresses of either the BG, P1 or P2 (fixed
size) partition
The code you show was made s
On 2017-03-11, at 08:07, Charles Mills wrote:
>
> That was a common way of addressing CSECTs larger than 4K: multiple USING
> instructions. We sometimes used an offset of 4095 because it could be
> accomplished with LA as you see in your snippet.
>
And even today, HLASM does not issue ov
assembler code still running.
On 11 March 2017 at 13:52, Tony Thigpen wrote:
> I am working on some REALLY old code. Some of the code has dates back
> in 1967! The oldest date found is 5/9/67.
>
> This code is still running daily. That's as good as 50 years later.
> Th
st [mailto:ASSEMBLER-LIST@LISTSERV.UGA.EDU] On
Behalf Of Tony Thigpen
Sent: Saturday, March 11, 2017 4:53 AM
To: ASSEMBLER-LIST@LISTSERV.UGA.EDU
Subject: 50 year old assembler code still running.
I am working on some REALLY old code. Some of the code has dates back in
1967! The oldest date found
On Sat, Mar 11, 2017 at 6:52 AM, Tony Thigpen wrote:
> I am working on some REALLY old code. Some of the code has dates back in
> 1967! The oldest date found is 5/9/67.
>
> This code is still running daily. That's as good as 50 years later. The
> only reason we are touching the code is because we
Actually the assembler doesn't care what value you use as long as you match the
LA matches the USING statement. Even then, it won't complain.
On Saturday, March 11, 2017 6:17 AM, David Cole wrote:
USINGs with multiple registers assume an interval distance of 4096 not
4095.
On 11 March 2017 at 13:52, Tony Thigpen wrote:
> I am working on some REALLY old code. Some of the code has dates back in
> 1967! The oldest date found is 5/9/67.
>
> This code is still running daily. That's as good as 50 years later. The
> only reason we are touching the code is because we are m
USINGs with multiple registers assume an interval distance of 4096 not
4095.
On Mar 11, 2017 11:11 AM, "Robin Vowels" wrote:
> - Original Message - From: "Tony Thigpen"
> Sent: Saturday, March 11, 2017 11:52 PM
>
>
>
> I am working on some REALLY old code. Some of the code has dates ba
- Original Message -
From: "Tony Thigpen"
Sent: Saturday, March 11, 2017 11:52 PM
I am working on some REALLY old code. Some of the code has dates back in
1967! The oldest date found is 5/9/67.
This code is still running daily. That's as good as 50 years later. The
only reason we
I am working on some REALLY old code. Some of the code has dates back in
1967! The oldest date found is 5/9/67.
This code is still running daily. That's as good as 50 years later. The
only reason we are touching the code is because we are migrating this
application from z/VSE to z/OS.
I don'
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