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Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…
... end. Does it appear on Harlequin?[/QUOTE]
Today I ... wouldn't work on the Harlequin because the Z80 and video ... -
Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…
... do you get on the Harlequin and on a real machine ... />
All zeros on the Harlequin.
On an issue ... -
Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…
... all zeros on Harlequin? If I remember correctly, Harlequin applies memory contention ... -
Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…
... correct. Indeed they match the Harlequin because I've moved the ... -
Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…
... /> [1] or at least, the Harlequin as there's still the ... -
Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…
... />
My only explanation why Harlequin gets the same results as ... that the memory contention in Harlequin does not work as Chris ... -
Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…
... /> [QUOTE]My only explanation why Harlequin gets the same results as ... that the memory contention in Harlequin does not work as Chris ... -
Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…
... />
I'm wiring up Harlequin now. I don't expect ... -
Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…
... I've seriously simplified the Harlequin waitGen circuit, and everything is ... -
I want to build a new, super spectrum ;-)only kidding Andrew :-) my brain's going at a mile a minute at the moment, so I thought I should put some of the ideas down in case one of them is w…
... replace it. I think the Harlequin guy was working on it ... -
Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…
... .8.x.
The Harlequin also showed the same results ... -
What did Spectrum BASIC lack (and was BBC BASIC so good?)Over the years, I've read in various multi-format magazines, that BBC BASIC was probably the best BASIC available on an 8-bit machine. I've never use…
... 't happen to have schematics/PCB layouts for the Spectrum SE ... -
Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…
...
I've updated the Harlequin blog to contain the results ... -
I've got a divIDE. Now what?I've purchased a divIDE and after a month it's at home. What can I do now with that? I've got a 48k+, a +2B and a +3. The +2B has the original ROMs,…
... you're laying out the PCB for it, all you need ... you've got an existing PCB, you can do the same ... -
I've got a divIDE. Now what?I've purchased a divIDE and after a month it's at home. What can I do now with that? I've got a 48k+, a +2B and a +3. The +2B has the original ROMs,…
... harder to implement on a PCB with complex logic because ... />
1. Much larger PCB, allowing PCB tracks to "bow out" leaving ... !)
2. Separate PCB that mounts at 90 degrees ... br />
5. 4-layer PCB. Exhorbitantly expensive in small production ... -
I've got a divIDE. Now what?I've purchased a divIDE and after a month it's at home. What can I do now with that? I've got a 48k+, a +2B and a +3. The +2B has the original ROMs,…
... was having with my own PCB design only a few months ... -
The Alchemist Software Update ThreadUpdate time again....... Games disk #9 available now, along with individual file downloads. Note that with the exception of Cannon Bubble, all thes…
... quid.
Etching a PCB is easy - that hard and ... -
The Alchemist Software Update ThreadUpdate time again....... Games disk #9 available now, along with individual file downloads. Note that with the exception of Cannon Bubble, all thes…
... quid.
Etching a PCB is easy - that hard and ... -
Damn, I think I need a reflow ovenOr a reflow frying pan at least... I was just assembling an order through Farnell since I've worn out another soldering iron tip (which has actually…
... will make the PCB much smaller, and the PCB is probably the ... going to home-make the PCB for this one, apart from ... ! (looks at unpopulated USB interface PCB for ALIAC-2) -
Operation Thunderbolt - still considered any good?Work on 1989 continues. I loved 1988's Operation Wolf, and 1989's Cabal was a nice development of the concept. I'm now playing (and watching the RZX…
[QUOTE=zx1;217317]Yea what's operation bear? I've never heard of that game![/QUOTE]
It's a bootlegged arcade PCB of Op-Wolf. -
Speccy just snuffed it while playing 3D Pinball :(I have two speccys but the one I use most has just given up the gost! :-( game froze up and now all I get is flashing patterns and lines:-( Everyt…
... dont mind removing the modulator PCB. I just found this link ... -
Operation Thunderbolt - still considered any good?Work on 1989 continues. I loved 1988's Operation Wolf, and 1989's Cabal was a nice development of the concept. I'm now playing (and watching the RZX…
[QUOTE=dm_boozefreek;217333]It's a bootlegged arcade PCB of Op-Wolf.[/QUOTE]
Yep, thats it. Obviously the Arcade near us couldn't afford the proper one. Bear seemed almost identical to Wolf. Anyone know the differences, if any? -
Wanted - 8701 IcHi, I've got one C64 (Yes, i know this maybe not the right place to ask... ;-) ) from EBAY. It works but have no color in display. I search and i fi…
... you have the first version PCB this chip is not present ... ...
If the PCB look like this: [URL="http ... -
Wtf??I won this NZ auction earlier this week [url]http://www.trademe.co.nz/Browse/Listing.aspx?id=116509561[/url] and have been to collect the hardware th…
Essentially the only source for ULAs is cannabilising old machines. On the other hand, you could try making one from the [url=http://www.nfluid.com/specDesign/indexPage.shtml]Harlequin[/url]'s design. -
Damn, I think I need a reflow ovenOr a reflow frying pan at least... I was just assembling an order through Farnell since I've worn out another soldering iron tip (which has actually…
... to the rest of the PCB.
Let me ... /> -| W-W /-------------
|O---------O pcb track
C -| \-------------
H ... -W /-------------
P |O---------O pcb track
-| \-------------
______|< ... -
Damn, I think I need a reflow ovenOr a reflow frying pan at least... I was just assembling an order through Farnell since I've worn out another soldering iron tip (which has actually…
... .jpg[/url]
The PCB pads itself are good enough ... 100% SMD to keep the PCB size reasonable (although I might ... -
real MB02+IDEHi, I just managed to rebuild a MB02+ hardware including HDD-interface to connect IDE devices as CF cards and FDD interface to connect up to 2 HD-fl…
Broken SpectrumsChaps ( & Mrs Death ), I was looking at getting some dynamic ram chips for the next phase of the Harlequin stuff, and I started thinking...... I've…
Wandering OT - I'm curious why you're thinking of using DRAM for the Harlequin rather than a modern static RAM? Of course, if it's "parts bucket engineering" (I have the chips sitting around, therefore I'll use them!) well, then I quite understand :-)Broken SpectrumsChaps ( & Mrs Death ), I was looking at getting some dynamic ram chips for the next phase of the Harlequin stuff, and I started thinking...... I've…
... the next phase of the Harlequin stuff, and I started thinking ...Broken SpectrumsChaps ( & Mrs Death ), I was looking at getting some dynamic ram chips for the next phase of the Harlequin stuff, and I started thinking...... I've…
... of using DRAM for the Harlequin rather than a modern static ... ahead, for Spectrum 128/SE Harlequin support, dynamic memory support would ...
