-
128k, +2, +3ok i`ve asked a lot of questions over the few days but this is gonna be my final one on whats what unless i get lost once i get my apeccy so here goe…
... your work.
The +2 has a built-in tape ... take advantage of floating bus behaviour on the 48k/128k/+2 will not ... -
128k, +2, +3ok i`ve asked a lot of questions over the few days but this is gonna be my final one on whats what unless i get lost once i get my apeccy so here goe…
... I've ever encountered the 'floating bus' bug. Everything I've tried ... parts. I had an old +2 laying around so I ripped ... put them in the old +2 case. I cut (carefully) a ... IDE controller and added a 2.5" 6GB hard drive internally ... -
Spectrum Game CompatibilityHi, At the moment I have a spectrum 48k. I am planning to get a 128k +2, but I have a problem. Will my 48k games work on 128k +2? Because some of the…
... the ULA and removed the floating bus effect. Although this was a ... he was mentioning about the +2 (grey) and +2a (black), is ... -
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…
... IO instruction, the contention starts 2 T-states [I]before[/I ... contended IO read of the floating bus (because that T-state is ... -
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…
... IO instruction, the contention starts 2 T-states before the contended ... contended IO read of the floating bus (because that T-state is ... -
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…
... documents the floating bus timing and how contention affects instructions.
2. The ... would continue to read another 2 bytes (as documented on the ... -
Group Order of Internal/External Kempston Turbo InterfacesI have contact Velesoft ([url]http://velesoft.speccy.cz/kmturbo-cz.htm[/url]) about the production of internal or external kempston turbo interfaces …
... you use any PS/2 mouse with DPI change ... ). Ideal is PS/2 optical mouse with DPI ... i can add:
-floating bus stabilisation ( return interrupt vector ... #FF to data-bus )
-fuller joystick ... 127 )
-issue 2 emulation ( fix port #FE ) -
Quick testCould I ask anyone with a real 128K or +2 to run the latest [url=http://www.shadowmagic.org.uk/spectrum/fusetest.tap]Fuse test suite[/url] on it and …
... Contended IN... failed (0xfd)
Floating bus... skipped (B=0x01)
Contended ... ... passed
High port contention 2... failed (0xfd)
2' but is otherwise the ... mode 'High port contention 2' passes (and is otherwise ... -
Quick testCould I ask anyone with a real 128K or +2 to run the latest [url=http://www.shadowmagic.org.uk/spectrum/fusetest.tap]Fuse test suite[/url] on it and …
... in guessmachine.asm).
2. Most of the tests fail ... /> Contended IN failed: (0x02)
Floating Bus failed: (0xff)
Contended memory ... : passed
High port contention 2: failed (0x02)
I ... -
Quick testCould I ask anyone with a real 128K or +2 to run the latest [url=http://www.shadowmagic.org.uk/spectrum/fusetest.tap]Fuse test suite[/url] on it and …
On a grey +2, loaded in 128 mode via ... ... passed
High port contention 2... failed (0xff)
with ... /> Contended IN... failed (0x02)
Floating bus... failed (0xff)
Contended memory ... passed
High port contention 2... failed (0x02) -
Quick testCould I ask anyone with a real 128K or +2 to run the latest [url=http://www.shadowmagic.org.uk/spectrum/fusetest.tap]Fuse test suite[/url] on it and …
...
Contended IN... passed
Floating bus... passed
Contended memory... passed ... ... passed
High port contention 2... passed -
Quick testCould I ask anyone with a real 128K or +2 to run the latest [url=http://www.shadowmagic.org.uk/spectrum/fusetest.tap]Fuse test suite[/url] on it and …
Tested 3 further grey +2's with the poke and ... previous result.
Tested 2 black +2A's with the ... /> Contended IN... failed (0x03)
Floating bus... failed (0xff)
Contended memory ... ... passed
High port contention 2... failed (0x03) -
Quick testCould I ask anyone with a real 128K or +2 to run the latest [url=http://www.shadowmagic.org.uk/spectrum/fusetest.tap]Fuse test suite[/url] on it and …
...
Contended IN... passed
Floating bus... skipped (B=0x01)
Contended ... ... passed
High port contention 2... passed -
Quick test (2)Could I ask any 128 / +2 / +2A / +3 owners to test the new version of [url=http://www.shadowmagic.org.uk/spectrum/fusetest.tap]fusetest[/url] on thei…
... ]Could I ask any 128 / +2 / +2A / +3 owners to ... the difference between the 128K / +2 and the +2A / +3.< ... failed(0x02)
Spectrum +2 grey
frame length...0x8000 ... /> contened in...failed (0xfd)
floating bus....skipped (b=0x01)
contended ... -
Quick test (2)Could I ask any 128 / +2 / +2A / +3 owners to test the new version of [url=http://www.shadowmagic.org.uk/spectrum/fusetest.tap]fusetest[/url] on thei…
... /> I have two grey spectrum +2. I test your software with ... first grey gave 0xfd)]
floating bus...skipped (b=0x01)
contened ... 1...passed
HP contention 2...failed (0xff) [ the first grey ... -
+2A, are they all this incompatible?My +2A does not seem to be faulty but the number of games that don't run on it are silly. Scooby Doo(Elite), Crazy Cars , Turbo Outrun, Vindicator(im…
... issue with some games (no floating bus) and sometimes a ROM issue ... ROM issue causing the mode 2 interrupt vector to go astray ... -
Fuse 0.9.0 releasedVersion 0.9.0 of [url=http://fuse-emulator.sourceforge.net/]Fuse[/url], the Free Unix Spectrum Emulator[/url] has just been released. Highlights of t…
... based on Fuse 0.6.2. Improvements since then include:
[*]Much improved contended memory and floating bus emulation.
[*]Improved display timings ... -
Another fusetest runWould anyone with a real machine be prepared to try the latest version of [url=http://www.shadowmagic.org.uk/spectrum/fusetest.zip]fusetest[/url], my…
... Contended IN... passed
Floating bus... passed
Contended memory... ... passed
High port contention 2... passed
0x3ffd read ... /> Tried 3 further grey +2's cold and results were ... passed
High port contention 2... passed
0x3ffd read ... -
MB02+ software and system developmentsThe following text was (before last modification) first published here: [url]http://www.sintech-shop.com/forum/board.php?boardid=20[/url] As discuss…
... 7FFD crash on real ZX128/+2(grey) without connect K-MOUSE ... disable read 7FFD, register A=floating bus data
- set flag Z ... -
Group Order of Internal/External Kempston Turbo InterfacesI have contact Velesoft ([url]http://velesoft.speccy.cz/kmturbo-cz.htm[/url]) about the production of internal or external kempston turbo interfaces …
... BUTTON - ZX reset
2) VIDEO CONNECTOR - video output only ... fixed vector table adress (correct floating bus value):
===========================================================
ZX128/+2(grey): 0xxxxxxx xxxxxx0x (detect ... -
RUSSIAN SOFTWARE and real ZXRussian ZX games is writed on russian ZX clones and support hardware feature TURBO OFF ( for ZX clone ZS SCORPION ). Russian ZX clone ZS SCORPION use…
... ) on ZX 128 / +2(grey), then data from floating bus is writed to ... paging port. ZX128 and +2 use ... -
Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …
... in a,(c) ; read floating bus on cycle 14338
... call #0d6b
ld a,2
call #1601
im 2
ld iy,syncint ... -
Which is the most technically accurate Spectrum Emulator?Ok, which is the most technically accurate Spectrum Emulator? Please don't just vote but give reasons why.
... IN... failed (0xfd)
Floating bus... passed
Contended memory... ... passed
High port contention 2... passed
0xbffd... ...
High port contention 2... passed
0xbffd... ... |
| 8. ZX32 | 2/10 | 5/47 | 7/57 ... -
+2A/+3 compatibility fixes thread!It might be a good idea to keep these fairly common +2A/+3 compatibility fixes (and requests) in a single thread for quick reference ;) Let's start …
... effects routine also used the floating bus so I've bodged around ... ,1
110 DATA 222,2,62,223,205
120 ... -
Where's the border line between a Spectrum and something else?I mean: there are purists out there that consider that anything that is not a true Sinclair Spectrum, with a true Z80 and a true ULA, and at most, 48…
[QUOTE=Madonna Mk 2;378134]NB: 128K models actually ... "toastrack" and "+2 grey" models do implement the floating bus behaviour, and the ... -
Where's the border line between a Spectrum and something else?I mean: there are purists out there that consider that anything that is not a true Sinclair Spectrum, with a true Z80 and a true ULA, and at most, 48…
... "toastrack" and "+2 grey" models do implement the floating bus behaviour, and the ... if it's actually a floating bus issue or other pesky incompatibility ... -
+3 dead(!)Hi, When I turn on my +3 I see only white and black strips (vertical) on screen any idea on how to fix it? Thank you in advance Chris [IMG]http:…
... , the Z80 will read "FF" (floating bus), which is the opcode of ...
This will push 2 bytes on the stack (wherever ... -
worth buying a zx spectrumAs i have been watching Micro Men i have been really thinking about buying another Spectrum. Now as i grew up in the 80's and was a massive speccy fa…
... ]
This one adds floating bus support:
[url]http ... = SE0
1 = SE1
2 = SE0
3 = SE1
worth buying a zx spectrumAs i have been watching Micro Men i have been really thinking about buying another Spectrum. Now as i grew up in the 80's and was a massive speccy fa…
[QUOTE=ingo;389597]Which special bug do you mean?[/QUOTE]
Reading from 0x7ffd writes the floating bus value to the port, normally resulting in a crash: e.g.
PRINT IN 32765.
Crashes the 128 or grey +2.worth buying a zx spectrumAs i have been watching Micro Men i have been really thinking about buying another Spectrum. Now as i grew up in the 80's and was a massive speccy fa…
... ]Reading from 0x7ffd writes the floating bus value to the port, normally ... /> Crashes the 128 or grey +2.[/QUOTE]Why do you think ...
