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Is spectaculator emulating the +2 correctly?i remembera few games that would crash when running in 128K mode, due to a bug in the hardware of the grey +2, hence it being replaced with the +2a. …
... the I register to a contended page at $c000?
contended and the +2A/+3 4 ... -
Is spectaculator emulating the +2 correctly?i remembera few games that would crash when running in 128K mode, due to a bug in the hardware of the grey +2, hence it being replaced with the +2a. …
... the I register to a contended page at $c000?
[/quote ... only needs to point to contended RAM (for a crash to ... -
Is spectaculator emulating the +2 correctly?i remembera few games that would crash when running in 128K mode, due to a bug in the hardware of the grey +2, hence it being replaced with the +2a. …
... I is set to any contended page:
[url="http ... /misc/1.jpg[/url] (non-contended)
[url="http://www ... /download/misc/2.jpg[/url] (contended - see how some letters repeat ... -
Is spectaculator emulating the +2 correctly?i remembera few games that would crash when running in 128K mode, due to a bug in the hardware of the grey +2, hence it being replaced with the +2a. …
[quote]
On 2003-08-08 00:18, needlej wrote:
(Woody - I couldn't get SPIN to reproduce this even with 'emulate ULA snow' turned on?)
[/quote]
GFX.SnowEffect := (Registers.I >= 64) and (Registers.I -
Is spectaculator emulating the +2 correctly?i remembera few games that would crash when running in 128K mode, due to a bug in the hardware of the grey +2, hence it being replaced with the +2a. …
... I register pointed to any contended page. The above source line ... -
Is spectaculator emulating the +2 correctly?i remembera few games that would crash when running in 128K mode, due to a bug in the hardware of the grey +2, hence it being replaced with the +2a. …
Aha, we've found one :)
Indeedy, Ninja Warriors has it's interrupt routine in a contended RAM page on the 128/+2 (page 1).
It shouldn't crash but the display will be corrupt.
Cheers,
Jon. -
Tough paging questionOK... Take this: 1. We have a program compiled and run from within GENS under a Pentagon 128K environment. 2. The program works perfectly. 3. We sav…
... :
Pentagon has no contended RAM where as the +3 ... /+2 emulation? Page 1 is contended there so if you have ... problem). Page 1 is not contended on the +3 (but the ... -
et tu SAM Coupe...Today I put my SAM Coupe on the desk, searched 5 hours for a file conversion utility PC->SAM, and tried to unlock the secrets of SAM mode 4 screen :)…
... that the memory is heavily contended to purposefully slow the operation ... -
et tu SAM Coupe...Today I put my SAM Coupe on the desk, searched 5 hours for a file conversion utility PC->SAM, and tried to unlock the secrets of SAM mode 4 screen :)…
... that the memory is heavily contended to purposefully slow the operation ... -
An MC question (sorry, there's no MC forum to post to!)Ok, still struggling with learning MC - but am getting there. I just can't find anywhere on the web / in books that explains how to do arrays in MC.…
Potentially *much* longer if the memory addressed by (IX+d) addresses contended memory! -
Announce: EmuZWin 2.4.1.0 with exact AY soundEmuZWin 2.4.1.0 with exact AY sound released today. In "exact sound" mode, should be very, very close to real sound. (My ears are sick, my head is sp…
... turns any multicolor off and contended timing too. So it is ... -
New project for 256 colours Games emulator!O.K. , I suggested Jonathan Needle ( Creator of the excellent Spectaculator at [url="http://www.Spectaculator.com"]www.Spectaculator.com[/url] ) to c…
... /cssfaq/reference/48kreference.htm#Contention"]contended memory information[/url], thanks to ... -
Announce: EmuZWin 2.4.1.0 with exact AY soundEmuZWin 2.4.1.0 with exact AY sound released today. In "exact sound" mode, should be very, very close to real sound. (My ears are sick, my head is sp…
... , these models distinct only in contended timing a bit (at least ... -
SpecEmu 2.1 betaFinally I think I've cracked all the gory contention details required by those trendy multicolour demos (48K/128K modes only, +3 contention can wait …
... of which is contended, and another is non-contended, entire instruction is ... itself is located in non-contended memory, I can not ... instruction is located in a contended memory, I find that not ... itself is executed from non-contended memory: in my opinion these ... -
SpecEmu 2.1 betaFinally I think I've cracked all the gory contention details required by those trendy multicolour demos (48K/128K modes only, +3 contention can wait …
... itself is executed from non-contended memory: in my opinion these ... /> Actually, port 7ffd is *not* contended, despite previous assertions that it ... looks like an address in contended memory to the ULA... the ... as I/O operations are contended on T2, not T1 ( ... -
MC 101Hello Group Members: Can't spectrum MC be embedded in a BASIC program
... between 16384 and 32767 is contended, meaning the ULA and Z80 ... -
Problem with RealSpectrumWhy am I having difficulty getting certain games to laod in RealSpectrum? The game seems to be loading ok then the screen goes black and nothing hap…
... first "[B]110[/B]% exact contended memory and multicolor emulation!" -
Another Z80 processor questionOK, this time this isn't clearly covered in the FAQ, as far as I can see.... Suppose we have the CB instruction "SET b,r" (b=bit, r=register (differ…
... ultra-precise stuff (floating bus, contended memory), but I want to ... -
A few questions regarding EmuZwinI had posted this in the development forum and then remembered there was an emulators forum, so apologies for the repetition. 1. I have been trying …
... have something to do with contended memory, but don't know ... 's almost certainly due to contended memory. See the CSS FAQ ... -
Interrupts details questionSuppose I am writing a game and I want to use interrupts to measure time, draw the screen without flicker, maybe to poll keyboard etc. What kinds of …
... might simultaneously access is called 'contended memory' and a detailed description ... the FAQ.
This contended region is not limited to ... -
Smooth Color Masked Sprites using fast page flip on 48kHere is a quick demo of using char based sprites using the Page flip method: a) Background is copied to buffer b) Sprites drawn on buffer c) Buffer …
... at #6000, which is in contended memory, and this will have ... -
Techy Z80 questions****** Question 1 ****** Take the instruction SET b, (HL). This is broken down (in machine cycles) as follows (according to Microprocessor Technolo…
... ? Reconstructing the breakdown from the contended memory timings in the FAQ ... -
Techy Z80 questions****** Question 1 ****** Take the instruction SET b, (HL). This is broken down (in machine cycles) as follows (according to Microprocessor Technolo…
... the data bus and is contended in a 3,1,1 ... -
Wanted: Code to wait until Border has been drawnWhen my IM2 interrupt fires, I want to wait until the ULA is past the first line of display before drawing. I know I need to wait about 14300T after…
... can do this either with contended memory (trivial), or by executing ... -
RZX for Sabre WulfI was just about to send an RZX for Sabre Wulf to the RZX Archive when I noticed they don't accept Ultimate's (and other companies' who haven't given…
... got the whole issue of contended IO timings to deal with ... less researched and emulated than contended memory timings. -
SpeedloadersSince I read Lee Tonks' post about the speedloaded version of MM3 he did, I've been playing around with various speedload routines I found on TTFn & …
... loader could only live in contended memory.
I successfully ... -
+2A "Ghost" programHi all - first time posting here, so I'll do a quick background - I was a (far too) dedicated 48k and +2A gamer in my younger days. Thanks to the mi…
... fact they are now in contended RAM.
It's ... -
If you could re-design the Spectrum...Let's suppose you could go back in time to the beginning of the Eighties. The Spectrum is being designed as the revolutionary successor to the alread…
... thus increasing the amount of contended memory needed, making it more ... -
ANN: Shadow of the Unicorn SEShadow of the Unicorn SE is no longer being distributed.
I wrote a program to run SOTU on the +2A/+3 a few years ago. I'm not sure if it runs at the normal speed since more pages are contended but anyway it is a slow game.
