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| Parallax Forums > Public Forums > Propeller Chip > TriBladeProp PCB: Uses 3 Propeller ICs for a Single Board Computer (SBC) | Forum Quick Jump
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Dr_Acula
Registered Member
      
Date Joined Dec 2008
Total Posts : 606
| Posted 10/1/2009 6:08 PM (GMT -8) |   | There are all sorts of ways of configuring the SIMH. Perhaps it might help to post the attached two documents regarding the SIMH.
I'm not sure if every single detail is there though. Eg there is the N8VEM at the bottom of one of the documents, but while it mentions the 8255 and the UART, it doesn't actually give the port addresses for these.
Re OUT in machine code, it is the same command in mbasic, ie OUT. I can get the exact syntax re the () and , when I get home, but essentially it is the port and the byte, the same as machine code. Mbasic is useful for quick and simple testing. But assembly creates much smaller compiled files than bascom.
Re replicating the >32k file fault, it has disappeared on my system too once I put in heater's new code. That was the only change I made - I kept all the files on the sd card as they were. I'm using v123 and heater's new bootup code. One of the reasons I'm doing things like compiling .mac programs on the triblade itself is to exercise lots of commands. If any bugs are going to show up with each new release, the only way to find them is to keep using a wide variety of programs, eg wordstar, assembly, C, Basic. I'll keep finding excuses to keep testing all these.
I think we are entering a 'zone of stability' that might herald a v1.0 release. ie, it will run eight hard drives will all the software I can think of.
What is next? Some sort of write protection on the 'rom'. The ability to (slowly) read unaltered simh floppy drive images.
Then - CP/M3 and MP/M? And some sort of DOS operating layer that it could drop back to with a Halt? The ability to change settings from within CP/M and/or from within a spin operating system?
www.smarthome.viviti.com/build
File Attachment :
altairz80_doc.pdf 313KB (application/pdf)This file has been downloaded 14 time(s).
File Attachment :
simh_doc.pdf 139KB (application/pdf)This file has been downloaded 13 time(s). | | Back to Top | | |
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Sapieha
Registered Member
Date Joined Sep 2007
Total Posts : 719
| Posted 10/1/2009 11:44 PM (GMT -8) | | Hi heather
It is Magnetic transcients from refrigerators start relay (Radio like pulses from it).
only way to damp it is to ad one RC filter betwen contacts on that Relay and clean its contacts.
Regards
Christoffer J
Ps. Posibly You must even adjust contacts to that them are more near with off state (better conntact with on state)
Nothing is impossible, there are only different degrees of difficulty.
For every stupid question there is at least one intelligent answer.
Don't guess - ask instead.
If you don't ask you won't know.
If your gonna construct something, make it as simple as possible yet as versatile as posible.
SapiehaPost Edited (Sapieha) : 10/2/2009 7:55:00 AM GMT | | Back to Top | | |
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Dr_Acula
Registered Member
Date Joined Dec 2008
Total Posts : 606
| Posted 10/2/2009 11:06 PM (GMT -8) | | | | |
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Cluso99
We live onboard
Date Joined Apr 2008
Total Posts : 2276
| Posted 10/3/2009 1:04 AM (GMT -8) | | Yes, I found the floppy was only 128 bytes, and the hard drive was 512 bytes. I had converted both to 512 bytes, but they both still failed. It now works with 2 x 512 byte sectors, but there is still another problem where I cannot do a low level block read. I am still investigating. When it works, we can shift to the new fsrw driver for the lot (heaters and my code variants). Also, this driver includes a timer block, so provided we set the time & date on loading, it will keep the time - fantastic lonesock 
BTW: I have changed the naming for the boot code to "BOOTFLOP.ROM" & "BOOTHDSK.ROM". If there is a difference later for CPM3 or MPM, then we can work out a name for it. I thought that BOOT????.ROM was a good name as that is in reality what it is, and keeps the various Boot codes together in a listing.
Links to other interesting threads:
Post Edited (Cluso99) : 10/3/2009 9:09:14 AM GMT | | Back to Top | | |
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Dr_Acula
Registered Member
Date Joined Dec 2008
Total Posts : 606
| Posted 10/4/2009 2:45 AM (GMT -8) | | Yes, the inaugural Zicog/Triblade conference has now concluded.
Lots of ideas bouncing around. Thinking about a two propeller solution with a high speed bus. Prop 1 is blade 2 on the triblade.
The other prop is very similar to prop 1, but specifically could have:
VGA, keyboard, mouse, 2 serial ports, audio in, audio out (for analog I/O and for sound and for the software modem), 6 pins for local LCD display and for any other general I/O use, TV out, and a reset line to the other prop.
So this is one possible board.
The other possible idea is an add-on board for the existing prop protoboard.
So both ideas are two props, but done in different board configurations (though similar functionality).
www.smarthome.viviti.com/build | | Back to Top | | |
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TreeLab
Registered Member
Date Joined Nov 2006
Total Posts : 136
| Posted 10/5/2009 8:20 AM (GMT -8) | | Dr A : So just how quick is a Koala fight? It seems like an oxymoron to my North American sensibilities (like OJ's slow-speed chase).
Cheers!
pr | | Back to Top | | |
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