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Messages - sirmorris

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31
I've made a kind-of 'norton commander' for managing files on your zxpand.

You can grab the binary and source over at the ZX81 forums: http://www.sinclairzxworld.com/zxpand-commander-v1-0-t956.html-st=0&sk=t&sd=a

With this program you can:

Browse directories and files
Execute programs
Create subdirectories
Delete files and empty subdirectories
Rename files and directories
Move and copy files

Hope you find it useful!

C

32
HARDWARE/SYSTEMS DISCUSSION / Re: 32X auto-region switch
« on: September 18, 2012, 01:16:22 PM »
Yeah, there's only 5V available at the cart slot, and pulling on this will only serve to heat up the base unit's regulators even more  :'(

33
HARDWARE/SYSTEMS DISCUSSION / 32X auto-region switch
« on: September 18, 2012, 10:34:19 AM »
I've been thinking about this for a long time and seeing as the Sega box was out I got to work.

I have both a PAL and an NTSC 32X and the PAL one only works with my unmodified Megadrive 1. My modded MD1 - which has a hacked version of Seb's Saturn switchless region changer in it - produces glitches when producing PAL output. I don't know if it's because of the hacks or if there's simply a core incompatibility. The modded MD is a very early model with the AUX port so perhaps this is significant anyhow I digress.

The MD cart socket has H and V sync signals. Scoping around shows these as TTL level signals and woohoo! the vsync signal changes in response to jumper changes without a reset. I wrote a little PIC program to time the sync pulses and output either 5V or 0V to the region select pin on the appropriate 32X chip.

So now my 32Xs automatically adapt to whatever machine they're plugged into (I guess, I don't have a US genny - does anyone have a spare I can have/borrow?) without flipping switches or any of that nonsense. Flipping refresh rates on the modded MD also switches the 32x.

Now all I have to do is work out if I can run the 32x without an external power supply by tapping off the MD's rails on the cartridge slot. No-one seems to have done this so I wonder if it's even possible...

34
HARDWARE/SYSTEMS DISCUSSION / Re: Dreamcast & SD card adapters
« on: September 04, 2012, 04:24:51 PM »
I've just bought one despite them looking a bit pants..!
C

35
HARDWARE/SYSTEMS DISCUSSION / Dreamcast & SD card adapters
« on: September 04, 2012, 02:12:32 PM »
I'm sure I saw a topic on here relating to this subject but I can't find it now, so here goes anyway:

What are the options for booting dreamcast games from SD card, and has anyone got any experience of this??

Ta!

C

36
CODING AREA / Re: What are you working on?
« on: August 03, 2012, 09:27:56 AM »
I'm working on a UI for the ZX81 AY players. Not especially glamorous but it needs to be done :¬.
This weekend I expect more SID type exploits at the Videolympics in Manchester.

37
Thanks all - 'tis as I expected :)

38
Hmm, I wasn't really thinking of any machine in particular but a flat screen is much more convenient than the hulking great Amstrad thing I use with Beebs, Einsteins, CPCs etc..

Doesn't sound too promising then ...

C

39
http://www.ebay.co.uk/itm/150831180123?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

I've heard that this may be a useful addition to a collection; someone over at the Einstein forums has had some success with it. Has anyone had a play?

Ta

C

40
HARDWARE/SYSTEMS DISCUSSION / Re: DivIDE resets speccy :(
« on: June 21, 2012, 02:05:00 PM »
Did :)

And it works!!

Thanks for the clues chaps :D

41
HARDWARE/SYSTEMS DISCUSSION / Re: DivIDE resets speccy :(
« on: June 20, 2012, 01:28:49 PM »
I finally got around to sticking the analyser on the z80. Guess what? No M1 activity. Nothing.

If I remove the DivIDE then the M1 signal is suddenly present again. So it definitely seems that the board is possibly pulling-up too hard on the signal or the extra load is just too much for the pin...

Changing z80 time I guess :)

C

42
HARDWARE/SYSTEMS DISCUSSION / Re: Soft Modding XBox / PS2
« on: June 15, 2012, 10:02:43 PM »
Well that's the XBOX sorted - now what about PS2? Let's say, just for the sake of education, that there was someone who had just obtained a PS2. Do I Would they need a hard-drive in order to softmod it? Or is it possible to mod the machine and boot dvd-r media? Purely home-brew, you know. I couldn't possibly advocate evil piracy, ahem.

Imagine if you will this imaginary person with their PS2, James Bond game, memory card and (if necessary) the lid off the machine so they can swap disks...

Would this be possible?

43
HARDWARE/SYSTEMS DISCUSSION / Re: DivIDE resets speccy :(
« on: June 15, 2012, 11:22:39 AM »
<dreams> if only ...

Someone should start documenting the pods so people can build their own - they're the hard-to-obtain parts IIRC...

44
HARDWARE/SYSTEMS DISCUSSION / Re: DivIDE resets speccy :(
« on: June 15, 2012, 11:03:51 AM »
Nope - it's going to be my last resort. It looks like the z80 has already been replaced on the affected board though. There's some slight flux residue on all the z80 pins. It's a nice job but I'm suspicious that there may be invisible damage under the chip like an open or short connection to the edge connector. I've beeped through all the lines to the z80 and ULA but that's a pretty crude test I admit. I forgot to pack my logic sniffer today so unless someone at work has a scope (don't laugh - it's been known ;¬) then lunchtime will have to be some other activity :D


45
HARDWARE/SYSTEMS DISCUSSION / Re: DivIDE resets speccy :(
« on: June 15, 2012, 10:57:00 AM »
The interface works fine with my + and 128. It's only the owner's 48 that's the problem :(

C

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