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#101426 - 09/02/15 08:52 AM Re: VME boards [Re: Edstrom]  
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Edstrom Offline
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Great! I'd love to do the 960 board one day. Thx!

#101433 - 09/03/15 06:15 AM Re: VME boards [Re: Edstrom]  
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Edstrom Offline
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Edstrom  Offline
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New VME board added: Mizar VME8105, a simple 68000 based 3U (half height) board with a OS9 bootstrap on.

The emulation includes a serial device that really isn't on the board but being expected to be found by the bootstrap on a serial VME board nearby. The bootstrap also presumably requires a memory board and boot device board. Anyone with experience of booting OS9/68000, please have a look, layout and details is found here:

https://drive.google.com/file/d/0B685nj_1DkduTG53ZEZldzJZMVk/view?usp=sharing

Let me know what you know about booting a full system.

#101580 - 09/14/15 09:07 PM Re: VME boards [Re: Edstrom]  
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Edstrom Offline
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Since the main UI on vanilla VME boards usually is a RS232 based terminal of some sort I am trying to figure out the way forward here. While I like the idea of diserial.c it seems to drain a lot CPU cycles. I got Average speed 45% for the fccpu1 board wich has three ACIA6850 and a PIT68230.

I can have done something wrong myself admitedly but when I study the code it seems to do a lot of updating of various signals in the RS232/diserial hook up.

For instance in device_serial_interface where the clock drive calls to rcv_edge which calls rcv_callback for every clock cycle, even when the line has no data on it. This is when my fan is working hard despite I am not typing anything on the terminal.

Why not update the signal in an event driven fashion, only when it changes state? I might have missed something fundamental about emulation though, let me know.

I have also looked at:
1) use one of the emulated VTxxx terminals but that would require firmwares
2) build a live socket connection to a native VTxxx terminal emulator or build in a simple telnet/ssh server

Any advice here is appreciated

#101582 - 09/15/15 01:23 AM Re: VME boards [Re: Edstrom]  
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R. Belmont Offline
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If you have an rs232 connection, you can redirect the serial out to a TCP socket instead of the built-in terminal.

Any serial implementation is going to have a fairly decent CPU load because of timing, although 3 of them shouldn't slow down emulation unless you're on a really dire machine. Any half-recent i5/i7 should handle that fine.

#101628 - 09/18/15 08:08 PM Re: VME boards [Re: Edstrom]  
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shattered Offline
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I've borrowed Force ISCSI-1 hardware manual and going to scan it soon, guess that bitsavers would be interested in that?

#101630 - 09/18/15 08:17 PM Re: VME boards [Re: Edstrom]  
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Lord Nightmare Offline
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Lord Nightmare  Offline
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Yes.

Scan it at around 300dpi greyscale (600dpi for schematics or high-res line art), I think Al can postprocess it to bilevel using imagemagick or something similar.

Al?


"When life gives you zombies... *CHA-CHIK!* ...you make zombie-ade!"
#101631 - 09/18/15 09:41 PM Re: VME boards [Re: Edstrom]  
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Al Kossow Offline
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Al Kossow  Offline
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that's ok. do the text at 600 so I don't have to interpolate from 300, and save it with lossless compression (NO JPEG!)

#101637 - 09/19/15 06:10 AM Re: VME boards [Re: Edstrom]  
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shattered Offline
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OK, I can do that.

Do you accept text files into the archive? There are quite a few, for the Besta itself and others.

#101649 - 09/19/15 08:12 PM Re: VME boards [Re: shattered]  
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Al Kossow Offline
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Al Kossow  Offline
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sure. just need a pointer to what you'd like to archive. directory and file naming to match the bitsavers style is helpful

#101658 - 09/20/15 08:25 AM Re: VME boards [Re: Edstrom]  
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shattered Offline
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There are also quite a few scans made by others, often from sources that are no longer available -- would you accept those as well? These are often in djvu format. F.e. the manual that I used to write ie15.c driver is: https://docs.google.com/file/d/0B55cuwBw5HR-MHdocUZISVVlQW8/edit?usp=sharing

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