[Simh] EXTERNAL: Question about changing the simulator from a VAXserver 3900 to a MicroVAX 3900

[Hittner, David T (IS)]

You can use a hex editor to change byte 4 in ka655x.bin from 2 to 1.

 

Dave

 

From: simh-bounces at trailing-edge.com [mailto:simh-bounces at trailing-edge.com] On Behalf Of norman lastovica
Sent: Wednesday, September 22, 2010 5:37 AM
To: simh at trailing-edge.com
Subject: EXTERNAL:[Simh] Question about changing the simulator from a VAXserver 3900 to a MicroVAX 3900

 

Within http://simh.trailing-edge.com/pdf/simh_faq.pdf <http://simh.trailing-edge.com/pdf/simh_faq.pdf>  ( SIMH FAQ 07-Sep-2005) there is an example of how to change the firmware to indicate that the emulated system is a microvax (vs a vaxserver) as follows:


4.6 How do I change the simulator from a VAXserver 3900 to a MicroVAX 3900? 


The system type is controlled by a "magic byte" in the CPU's boot ROM. By default, the system type is a VAXserver 3900. To change the type to a MicroVAX 3900, patch the boot ROM as follows: 

sim> set ptr ena 

sim> att ptr ka655x.bin 

sim> ie ptr 4 

4: 2 1 

sim> det ptr 

and reboot the simulated VAX.

 

With 3.8-1 this sequence doesn’t work.  Is there a new way of doing this?

 

Thanks!

norm

 

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Oracle <http://www.oracle.com/> 
Norman Lastovica | Senior Managing Engineer
Phone: +17193396749 <tel:+17193396749>  
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