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Running code from the display memory?Is it possible to run machine code from the memory area used by the display file? If you were really out of memory and some part of screen is not u…
The +2A/+3 would just have the edge over the rubber key machines running in contended RAM. -
Running code from the display memory?Is it possible to run machine code from the memory area used by the display file? If you were really out of memory and some part of screen is not u…
... ! Does this mean that the +2A/+3 actually runs SLOWER than the ... RAM?[/quote]
Well, +3 might run a bit faster ... due to CPU clock (3.5 vs 3.54MHz). More interesting question ... would be whether ZX +3 is slower/faster in contended ... -
Running code from the display memory?Is it possible to run machine code from the memory area used by the display file? If you were really out of memory and some part of screen is not u…
Many opcodes have fewer points of contention when running on a +2A/+3. -
Running code from the display memory?Is it possible to run machine code from the memory area used by the display file? If you were really out of memory and some part of screen is not u…
... contention when running on a +2A/+3.[/quote]
I don't ... is correct, then even if +3's opcodes has less contention ... 128k can be equal to +3.
Some real test would ... -
Running code from the display memory?Is it possible to run machine code from the memory area used by the display file? If you were really out of memory and some part of screen is not u…
... during ULA display fetches. The +3 has one uncontended cycle in ... />
As a result, the +2A/+3 machine are already ahead due ... the address bus whereas the +3 ULA responds to the combination ... all can cause contention. The +2A/+3 machines see the address but ... -
Plus D kit and games for auctionI've listed a couple of fully working Plus-D interfaces on ebay [url]http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&rd=1&item=230132119622&ssPageNam…
... PlusD to work with spectrum +2a, +3. Is there any chance we ... -
'Straddle keyboard tailsWell, I bought an Amstrad Speccy keyboard off an ebayer - not for a Spectrum (I don't actually have an Amstrad one) - but for my own homebrew compute…
... like a keyboard for a +2A/+3, which might help you narrow ... this for the +3 (and hence also the +2A), for some reason ... -
'Straddle keyboard tailsWell, I bought an Amstrad Speccy keyboard off an ebayer - not for a Spectrum (I don't actually have an Amstrad one) - but for my own homebrew compute…
... and different again from the +2a/3 membrane, which I think you ... -
Strange I see no PS3Ive just seen a couple of vid game adverts on tv (lara croft, Pirates or the ... and Tiger woods golf) Any idea why on the final screen of the ads,…
... kidney to buy the Spiderman 3 game. Wankers.
Never bought ... -
Manhunt 2...banned!!Looks like the BBFC have put their foot down and refused to certificate Manhunt 2. Shame as I was looking forwar to this on Wii.
... Manhunt. Successful, and very popular game with a 'Running Man' theme ... of Gremlin Graphic's Deathwish 3 game.
(I loved that ... game. Was that wrong? Should I ... -
Manhunt 2...banned!!Looks like the BBFC have put their foot down and refused to certificate Manhunt 2. Shame as I was looking forwar to this on Wii.
... of Gremlin Graphic's Deathwish 3 game.
(I loved that ... game. Was that wrong? Should I ... /> That was an astonishingly violent game (arguably one of the most ... been more interested in video game back in the late '80s ... -
Manhunt 2...banned!!Looks like the BBFC have put their foot down and refused to certificate Manhunt 2. Shame as I was looking forwar to this on Wii.
... of Gremlin Graphic's Deathwish 3 game.
(I loved that ... game. Was that wrong? Should I ... -
Low Sound output + Sound distorting pictureHi, I am having a problem with my Grey +2 at the moment while trying to use RGB output. When I load a game the loader tones are fine but the actual…
... the diagram for the Spectrum +2A, +3 now those do have the ... sound out on pin 3
But I can ... +2 gray case.
3 years ago I did modify ... the bright line on pin 3 for sound output.
And ... the bright line to Pin 3 after the cut I soldered ... -
Low Sound output + Sound distorting pictureHi, I am having a problem with my Grey +2 at the moment while trying to use RGB output. When I load a game the loader tones are fine but the actual…
... the diagram for the Spectrum +2A, +3 now those do have the ... sound out on pin 3
But I can not ... -
+2B ram chips?Hi all, I have got 2 Plus2B`s and 1 Plus2 gray case. Ok the one Plus2B don`t work, so I tried to see if I could pin down the problem. I changed the …
... the only source is another +2a/3 board, you may as well ... , if you have a working +2a yourself, you could test the ... -
Emulator Comparison ChartHi. In a similar vein to [URL=http://www.ppest.org/zx/zxse.php]Piters[/URL] comparison of various ZX emulators, I've been looking at adding some deta…
... all of 48K, 128K and +2A/+3 mode).
For floating ... -
HelpI have received my RGB SCART / P?ritel cable for my +2A, and now I have attempted to connect it, resulting in a crap signal on my TV! Can someone hel…
... / P?ritel cable for my +2A, and now I have attempted ... my +2, and on a +2a/+3 it will look crappy.
+2B problem stillHi all, I have a spare +2B that still dont work. Richard kindly sent me 4 x 4464 ram chips but the +2B still dont work I have swapped over both ROM`s…
... chip from is a working +2a/3, and as there's no ...machine IDs for .z80 snapshotsHi, is there s.o. officially in charge for the .z80 file format? while upgrading zxsp's save_z80 routine i added new machine IDs for the Specci vari…
... +2
7,8 - +3 +2A
9 - Pentagon 128k
89 - +3 Spanish (*)
90 - +2A Spanish (*)
128 - ... a custom rom for the +2A/+3, because it is 64K. ...spectrum PSU'sI've read contradictory info on which psu(ie amp rating) is for which spectrum. :confused: The models and amp ratings are 1.2A, 1.4, 1.85 and 48k, …
... />
Inside the Spectrum (not +2a/3) is a voltage regulator, the ...Best 128k model to add CF IDE disk etcHi, i'm hoping to turn one of my speccys into more of a 'console' the plan is i'd like loads of speect games installed say on a compact flash card …
... won't work for the +2a/+3. I guess that won't ...Best 128k model to add CF IDE disk etcHi, i'm hoping to turn one of my speccys into more of a 'console' the plan is i'd like loads of speect games installed say on a compact flash card …
... grey +2 but use a +3 case. You should find the ... +2 will fit in the +3 case easily. Swap all the ... black key tops. Remove the +3 drive and create a custom ... . The extra room where the +3 drive was should be fine ... it the same as a +2a/+3 RGB socket, or at least ...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…
... fact contended unless it ends 3 cycles before that, though, as ... ]This contradicts that statement though "+3 ULA, which applies less contention ... "idle bus" points wrong), while +2A/+3 ULA applies the proper ~MREQ ...Noob question. I'm stillconfused.I thought I had it all sorted out about the different models: +2....+2a....+3. But then, suddenly, I saw that there were a +2b. So, can anyone pleas…
... about the different models: +2....+2a....+3.
But then, suddenly, ... closer to the 48k or +3 regarding compatibility ? And, is ... machine based on the +3 motherboard. In fact is ... the +2b the +2a but with the error in ... the +3b was a +3 with fixed soundZXSpin 0.62 Available nowAs promised (and only a [i]little[/i] past the deadline) here is the latest version of ZXSpin. Many bugs have been fixed, and a few new features add…
... all 128K machines excluding the +2a/3.
The 128K certainly ...Noob question. I'm stillconfused.I thought I had it all sorted out about the different models: +2....+2a....+3. But then, suddenly, I saw that there were a +2b. So, can anyone pleas…
... about the different models: +2....+2a....+3.
But then, suddenly, I ... closer to the 48k or +3 regarding compatibility ? And, is 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…
... these regular M cycles. On +2A/+3, the only contended T states ...Best 128k model to add CF IDE disk etcHi, i'm hoping to turn one of my speccys into more of a 'console' the plan is i'd like loads of speect games installed say on a compact flash card …
... it the same as a +2a/+3 RGB socket, or at least ... the port to match the +2A type.
is the ...Kempston on real machines and on emulatorsRecently I've tested several 48K games on my Spectrum +2A with Kempston interface. The computer resets when I start the game. I've tried with two dif…
Floating bus (vague apologies for the short reply, but have to go to work). Cobra doesn't run at all on a +2A/+3, independent of the control method.
