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ZX128/+2 unrainer (HAL10H8)[url]http://velesoft.speccy.cz/zx/umbrella/umbrella.htm[/url]
... in NMI menu is bad I register value detected. If software UNRAINER ... works only for images if I understand you right. That ... software and cannot correct its I register content.
In ... the hardware Unrainer??? or should I look for other reasons like ... -
ZX128/+2 unrainer (HAL10H8)[url]http://velesoft.speccy.cz/zx/umbrella/umbrella.htm[/url]
... software and cannot correct its I register content.
BTW: ... hardware Unrainer??? or should I look for other reasons like ... any SNA/Z80 snapshots, I register can be fixed before start ... game call NMI and fixed I register manually(or automatic, if ... -
Batman crashes on MobileZXDear all, I'm one of the authors of MobileZX ([url]https://sourceforge.net/projects/mobilezx/[/url]) and find that Batman crashes within a few secon…
... vector address (ie: MSB from I register and LSB from data bus ... -
Maze Mania - How did they do it?Hi, I was looking at the game "Maze Mania" by Hewson Consultants, written in 1989. The game can be downloaded from here [URL]http://www.worldofspec…
Now shall we start getting really clever and start scrolling screen areas around by simply using the I register and a few choice opcodes or maybe just leave it there for now. Yeah, let's leave it cos I really can't be arsed :D -
48K games that don't work on a +2Not sure if there is already a thread about this but recently I've noticed some old 48K games will not run on my +2 - even in 48K mode. Examples are…
... , but the 'snow' effect (setting I register between $40 and $7F) will ... harmless on a 48 machine. I'm not sure how +3 ... the snow effect. But hey, I've only just discovered this ... machines aren't affected by I addressing contended memory at all ... -
Quadrax - Compatibility problems - help!I bought this game last month and when I tried to load it today...it crashes in my +2A!!! Sh*t!! the game was expensive to get, and now I can't play …
... +2A because it sets the I register to $3A. On the 48K ... seems to be to change I to $3B, as the +2A ... loading (the flashing borders bit). I'm not sure how you ... LD A,$3A
LD I,A
IM 2[/CODE ... LD A,$3B
LD I,A
IM2[/CODE]
+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 …
... games use incorrect IM2 vector = register I is set to #39 or ... rewrite with new code. If register I will rewrited to value #3B ... (or #39)
...
LD I,A = bytes #ED,#47
Same problem, I register is set to #3A
+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 …
... only in 128 basic.
I convert TZX version to TAP ... -movie.zip[/url]
I see next problem in this ... - after start game is set I register to value 0 and is ...The Goldfinch updates thread([url=http://www.worldofspectrum.org/forums/showthread.php?t=25034]original announcement thread here[/url] - I figured it was worth starting a new to…
... this in hardware - if I went for a bigger CPLD ... as expensive as the one I'm using of course) - ... interrupt mode, save the I register then point it at my ... original interrupt state (since I'd have got to where ... to use the method that I think the multiface uses - ...The Goldfinch updates thread([url=http://www.worldofspectrum.org/forums/showthread.php?t=25034]original announcement thread here[/url] - I figured it was worth starting a new to…
...
That makes sense, although I wonder whether that would be ... interrupt mode, save the I register then point it at my ... code for capturing interrupt and register state[/url], "borrowed" from ... effort to capture the R register, despite apparently not using ...Snow on screen of 48K Speccyok you wizards I fixed up my 4116 ram issue as Winston and McLeod advised me before by replacing with 4164's.... all I could find here in Singapore (…
... " is white... I have only ever set I register in contended ram ... on an emulator, but when I ... bits appearing on screen. I will try it on ... suspect is the xtal which i changed - the 14. ... respect" of all time - I think your pac-man "load ...Memory concerns with z88dkI've retaken my old spectrum project and sadly I've reached a dead end very fast. I'll try to explain my worst problem in a few lines. I'm not a vet…
... with something else. Unfortunately I'm used to memory ... transparent to the programmer -- I just need to impart ... will also be uninitialized. I should also mention that accessing ... />
im2_Init() loads the I register appropriately and places the z80 ...just thinking about ...compo for zx 16k ? anyone ?
... about where to point the I register:
In RAM ... ; 32768: doesn't exist. :-) I suppose if you tried it ... that writes to the I/O bus and gives ... you a different offset. I don't know if ... it broke on [i]some[/i] DivIDE interfaces on [i]some[/i] Spectrums.just thinking about ...compo for zx 16k ? anyone ?
... about where to point the I register:
[....]
In ... />
[...]
[/QUOTE]
i will go for 3rd option ... , at least, i can say 'don't plug ...Games not compatible with real grey +2There are many threads about Spectrum+3/2A incompatibility issues but what about grey +2? I've found that games like Marauder and Skate Crazy don't w…
... the 16/48K, when the I register points to 64-127 then ... 49152-65535, so setting the I register to 192-255 can also ... grey +2 models.
I haven't tried any of ... on the real thing so, I don't know if they ... same problem (they have the I register set to 240).Games not compatible with real grey +2There are many threads about Spectrum+3/2A incompatibility issues but what about grey +2? I've found that games like Marauder and Skate Crazy don't w…
... the 16/48K, when the I register points to 64-127 then ... 49152-65535, so setting the I register to 192-255 can also ... models.
[/QUOTE]
I'm missing something here. Why ...Games not compatible with real grey +2There are many threads about Spectrum+3/2A incompatibility issues but what about grey +2? I've found that games like Marauder and Skate Crazy don't w…
[QUOTE=Alcoholics Anonymous;412870]I can't see how that ... use IM 1 and the I register is set to 63, it ... IM 2 and point the I register to 64-127 before any ...Mistake in the 128K technical FAQ?[url]http://www.worldofspectrum.org/faq/reference/128kreference.htm[/url] [quote]Memory banks 1,3,5 and 7 are contended.[/quote] Really? I thought i…
Quicker and easier would be to try reading from the AY [i]data[/i] port. Floating bus => 128K, same as AY [i]register[/i] port => +2A/+3. Might make debugging on some emulators harder though.Rest in Peace, Jonathan Smith (was: Frobush Absence)You may or may not have noticed the absence of the honourable Frobush aka Jofa Smifff from your forums... The explanation is a little sad but does ha…
... difficult time.
I am also interested to see ... you mention Ping Pong. I loved this, and after ... was due to a bad I register setting. It would even do ... dont have access but when I'm back in Singapore ... , and from the heart. I envy you as a friend ...Rest in Peace, Jonathan Smith (was: Frobush Absence)You may or may not have noticed the absence of the honourable Frobush aka Jofa Smifff from your forums... The explanation is a little sad but does ha…
... was due to a bad I register setting.
As Jof only ...Posting Under an AliasAs somebody who does in fact post under his own name (a failure of imagination rather than a principled stand), this wouldn't preturb me particualrly…
... use said forum.
I'm not registered under my ... , but on one forum I use my Ham Radio callsign ... easily... From the links I post in my sig etc ... waste could work out where I live.
It ... re posting of course, if I register on a forum full of ...Mr Do! ?Not exactly a new idea (at least twenty-seven years old now :-o), but how about a port of Mr Do! to the Spectrum? There was never an official one, ev…
... lower border.
I believe I can even get the two ... (the single-byte ones, with register operands) take 4 T-states ... instructions aren't affected by I-register contention, so it can use ... work on another one until I solve the first problem. Unfortunately ...Mr Do! ?Not exactly a new idea (at least twenty-seven years old now :-o), but how about a port of Mr Do! to the Spectrum? There was never an official one, ev…
... lower border.
I believe I can even get the two ... (the single-byte ones, with register operands) take 4 T-states ... instructions aren't affected by I-register contention, so it can use ... work on another one until I solve the first problem. ...Speccy Tour 2010 VotingHi all Within the next hours the voting for the Speccy Tour 2010 will start. So far there's only 8 players signed up for the Tour. But I'm sure if y…
Sounds like a lot of fun to participate.
If I register, should I play all the games? Or some games from some categories? Or the games set will be decided by voting later?
How much time will I have to play all the games?Speccy Tour 2010 VotingHi all Within the next hours the voting for the Speccy Tour 2010 will start. So far there's only 8 players signed up for the Tour. But I'm sure if y…
... to participate.
If I register, should I play all the games? Or ... />
How much time will I have to play all the ... />
If you register at HARP, you can Register for the competition ...ula bookula book is here: [url]http://www.zxdesign.info/book/[/url] can i post sam coupe stuff here - she kind of is a speccy if you stuff the speccy rom i…
I think there is a lot ... order! :grin:
I think I used to think snow was ... hard way that setting the I register to 40h-7Fh was not ... same value to the R register!
Yes! POTW ...Pretty CrashesTo make a 48K spectrum crash spectacularly and beautifully enter the following into basic. Also works on a 128k in 48k mode though not quite as prett…
... interrupts effectively, as pointing the I register to the RAM will cause ...New game! Crimbo!Hi all, we are very proud to announce our new game: Crimbo - A Gloop Troops Tale. [url]http://www.littleshopofpixels.co.uk/games/crimbo/crimbo.zip[/…
... emulator now and as the I register now addresses uncontended memory it ...
