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SafeSpeed
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PostPosted: Tue May 31, 2005 12:14 
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ed_m wrote:
Roger wrote:
Indeed. In fact I've found it generally easier to make a safety case by managing without an OS and keeping control of all memories and peripherals myself by just polling as required or using interrupts.


gosh.. a techie :D
shall we wow them with embedded software speak?


Could do - I've had ten years experience doing hardware and assembly language software for embedded systems. :) (That was in the 1980s I did a lot of work with 8085 and Z80 - hell I can even remember enough to hand assemble some Z80 code)

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Rigpig
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PostPosted: Tue May 31, 2005 12:17 
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SafeSpeed wrote:
Could do - I've had ten years experience doing hardware and assembly language software for embedded systems. :) (That was in the 1980s I did a lot of work with 8085 and Z80 - hell I can even remember enough to hand assemble some Z80 code)


Yow, Z80. Manic Miner anyone? :lol:
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Ernest Marsh
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PostPosted: Tue May 31, 2005 23:08 
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I still use a machine at work driven by a 486 DX with Windows 3.11 :!:
It's bomb proof!
The Windows GUI is so thin in places, you can see bits of DOS poking through!!!
If anyone wants to play, I have a Macintosh LC which crashes as regularly as clockwork - about every ten years :D You can take it out and play to your hearts content - if you can find some software!

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Pete317
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PostPosted: Tue May 31, 2005 23:46 
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Rigpig wrote:
Yow, Z80. Manic Miner anyone? :lol:


I've got a Spectrum emulator on my PC, complete with MM.
It's still great!

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Peter
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Roger
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PostPosted: Tue May 31, 2005 23:57 
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I cut my teeth on 6502s in both PETs and the Beeb. I think I can still remember the significance of every memory location on page 3 of the reserved BBC memory - and all the *FX commands that used to get to them. Now how's that for anoraking? ;-)

I remember one particular programme I wrote where I needed 21 characters across the screen. I invented a new mode, similar to Mode 5 by careful programming of the 6845 CRTC registers. All went well - until you broke out of the programme and typed "List". The programme listing scrolled diagonally!
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