Posts: 38 Location: Windermere, UK Joined: 16.05.07
Posted on August 03 2009 06:08
If anyone's interested I've just spent a month programming in VAX Macro to generate fractal graphics. I struggled getting examples of VAX Macro from the web, however it was a really fun experience overall.
I always liked the VAX instruction set, especially if you have some good macro libraries to work with (i..e putting variables on the stack rather than depending so much on globals, etc). Never needed to do too much floating point in Macro, though. Have used the EDITPC instruction for packed decimals. That's a strange little instruction.
I have a macro library so you could define stack variables like:
_STKDEF FP_DEVNAM .blkq 1 ; Device Name
_STKDEF FP_DEVNAMBUF .blkb 16 ; Device Name Buffer
_STKDEF FP_ITMLST .blkb 4*IL_LENGTH ; DVS Item List
_STKDEF FP_ITMLST2 .blkb 4*IL_LENGTH ; DVI Item List
... code ...
Then you could do things like 'movl #0,FP_ITMLST(fp)' and keep all your goodies in the stack using the frame pointer.
malmberg December 12 2017 HPE only makes the most current version of OpenVMS Alpha / IA64 /VAX available to hobbyists. When I had access to the Alliance 1 program it was the same. No public downloads are allowed by HPE.
nmbonao December 08 2017 Is anybody knows OpenVMS 8.2 version downloadable version? or CD copy? Thank you very much
aarommes December 02 2017 Bitcoin and Blockchain enthusiasts ( plus distributed computing ) please connec / reply: http://www.openvmshobbyis t.com/forum/viewthread.ph p?forum_id=130&thread_id= 2991
malmberg September 10 2017 https://sourceforge.net/p /vms-ports/wiki/VMSInstal lation/ For the most part just use VMS 6.1 media instead of 7.3. But why run the older release?
DoeveR August 07 2017 Where can I find the write up on running VMS 6.1 using the simh emulator?
Bart March 20 2017 Happy to have found my password again!