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OptimisationI've participated in several thread hijacks about this, so perhaps I should open a new thread. Et VIOLA! Here it is! Knuth, who was earlier reporte…
... much simpler to implement in a garbage collected environment).< ... the garbage collection in C# which wasn't possible in Java last ... resources.
In C# the floating point routines don't take ... critical code.
In C# you can allocate data on ... -
Sinclairean A3[B]Sinclairean[/B], a new ZX Spectrum emulator written in machine code for x86-compatible, OpenGL-capable computers. Features: [LIST] [*]Fast machin…
... following release. Real contended memory, floating bus and machine-code implementation is ... progress ;)
See ya in Sinclairean B0! -
Tricks with IN 31It's generally considered unwise to use a Kempston joystick's fire button to start a game, because the floating bus effect can make arbitrary data ap…
... disconnected, and I read IN 31 while the ULA is ... a short interrupt routine in IM2 to make sure of ... more interfaces then value of floating bus can be unstable !!!
... connected, and I read IN 31, can I be ... that I've just typed in.[/QUOTE]
... -
Tricks with IN 31It's generally considered unwise to use a Kempston joystick's fire button to start a game, because the floating bus effect can make arbitrary data ap…
... with interrupts
IN 31 ; read joystick port
IN 254 ; read keyboard
... connected, the floating bus will normally give
(IN 31) AND ... game-starting condition:
(IN 31) AND 31 = 16 ... -
Tricks with IN 31It's generally considered unwise to use a Kempston joystick's fire button to start a game, because the floating bus effect can make arbitrary data ap…
... with interrupts
IN 31 ; read joystick port
IN 254 ; read keyboard
... connected, the floating bus will normally give
(IN 31) AND ... game-starting condition:
(IN 31) AND 31 = 16 ... -
zxs v0.2 releasedI have released v0.2 of zxs if anyone is interested, judging by the response to the first release, I'd say not, but I'm gonna do it anyway!. It has h…
... a solid black attribute square in the top-left as the ... has passed that area, but in zxs you can see the ... probably notice tearing of sprites in a lot of games until ... you need to emulate the floating bus to prevent a number of ... -
zxs v0.2 releasedI have released v0.2 of zxs if anyone is interested, judging by the response to the first release, I'd say not, but I'm gonna do it anyway!. It has h…
... />
You are correct in your edit but I will ... solid black attribute square in the top-left as ... notice tearing of sprites in a lot of games ... be addressed a little later in development. The timing is ... need to emulate the floating bus to prevent a number ... -
Cant DecideI have had a lot of spectrums in my time from the 16k to the +3 and as we all know they all have flaws. I am thinking about buying another and wanted…
... referring to the floating bus. That's a bug in the original Spectrum ... -
Cant DecideI have had a lot of spectrums in my time from the 16k to the +3 and as we all know they all have flaws. I am thinking about buying another and wanted…
... referring to the floating bus. That's a bug in the original Spectrum ... -
Developing on Linux (Ubuntu 10.04)Ok, so I decided to install Ubuntu as my main OS, but keep XP as a bootable partition just in case I err mess up Ubuntu, :) I also have XP VM in Virt…
... go to Sergey Bulba, his C source code for an AY ... emulator in C# (though in the end I've been forced to use floating ... point numbers in emulation instead of integers ... ).
In the end, I'm just ... -
Sinclairean A3[B]Sinclairean[/B], a new ZX Spectrum emulator written in machine code for x86-compatible, OpenGL-capable computers. Features: [LIST] [*]Fast machin…
... tape_load_trap and tape_save_trap functions in there as they are ... to be accidentally identical in SinclaireanX.[/quote]
... then I incorporated the floating bus logic from Fuse, ... and contention_pattern_65432100 tables from Fuse in there.[/quote]
... -
Games in machine codeHi everyone, How do go about doing multiple shots like a machine gun, do you have to store every x and y position of each bullet? When you kill som…
... :
The data bus was set at 64 BITS ... />
The FSB (Front Side Bus) is quad pumped @ 100mhz (single ... and SIMD instructions are processed in parallel with normal register ... registry etc. is usually written in 'C' but everything specific to the ... -
Games in machine codeHi everyone, How do go about doing multiple shots like a machine gun, do you have to store every x and y position of each bullet? When you kill som…
... Windows, with a specialised bus for the POS devices (receipt ... something pretty tight). Writing something in C, Java, Perl or whatever ... write something smaller and faster in C. Why? Because it will ... Spectrum twitter client demo in C, not in asm. Why? Because ... -
What Spectrum to choose?Hi i'm new to the Spectrum. I read 'bout it in CDA (Polish game magazine) and watched LGR review of the 48k and it REALLY interested me. What model m…
... and the +2a is the floating bus, and more games than you ... 128k had some enormous bugs in the ROM, and I'd ... +2a was black, otherwise identical in looks to the +2a.
What Spectrum to choose?Hi i'm new to the Spectrum. I read 'bout it in CDA (Polish game magazine) and watched LGR review of the 48k and it REALLY interested me. What model m…
... 't run because of the floating bus and that can be bodged ... better AY sound.
In what way are they a ... games, cause if *fixes* the floating bus, which is only there because ...What Spectrum to choose?Hi i'm new to the Spectrum. I read 'bout it in CDA (Polish game magazine) and watched LGR review of the 48k and it REALLY interested me. What model m…
... QUOTE=guesser;495233]In what way are ... cause if *fixes* the floating bus, which is only there because ... software that uses the IN #FF port, there ... br /> 1. (best) decode the IN #FF port and make a ... implement, even by a beginner in electronics :)"
...The Ultimate Spectrum, made from old spectrumsGiven that all types of the Spectrum are less than ideal in one respect or another, I wondered what the ulimate refinement would be, but just using o…
... . There's really no point in having floppy drives these days ... have recently read that the floating bus fix means that a DivIDE ... the divIDE compatible +3E ROMs in one half and double copies ... of the Spectrum SE ROMs in the other half.The Ultimate Spectrum, made from old spectrumsGiven that all types of the Spectrum are less than ideal in one respect or another, I wondered what the ulimate refinement would be, but just using o…
... Guesser's Flash ROM board. In one half you can have ... ROMs for maximum compatibility and in the other half the divIDE ... ) the +2B sound mod, the floating bus mod, the joystick port mod ... , and the expansion bus mod.
You'll ...The Ultimate Spectrum, made from old spectrumsGiven that all types of the Spectrum are less than ideal in one respect or another, I wondered what the ulimate refinement would be, but just using o…
... for maximum compatibility and in the other half the ... quite a good plan in some ways, and it ... wife would be justified in calling it. I hardly ... better than the DivIDE+. In addition to that, if ... DivIDE+ (possibly because the floating bus mod has been done) would ...The Ultimate Spectrum, made from old spectrumsGiven that all types of the Spectrum are less than ideal in one respect or another, I wondered what the ulimate refinement would be, but just using o…
... lousy design.
[quote]In addition to that, if my ... a DivIDE+ (possibly because the floating bus mod has been done) would ... +3 edge connector. The expansion bus mod restores the ROMCS line ...What model next ?Hi All I already have two 48k rubber kyed 48k Spectrums and a Grey +2 What to get next. ZX Spectrum + ZX Spectrum 128 Toast Rack ZX Spectrum +3
... flash rom in my +2b, the spectrum SE roms, the floating bus mod ... is done just need to sort the expansion bus and ... adapters that were made back in 'the day' which will suffice ...What model next ?Hi All I already have two 48k rubber kyed 48k Spectrums and a Grey +2 What to get next. ZX Spectrum + ZX Spectrum 128 Toast Rack ZX Spectrum +3
... 's need only easy modification in internal structure (equations). Raining/snow ... and return floating bus). Ports acceleration can be also implement (instructions IN/INI ...What model next ?Hi All I already have two 48k rubber kyed 48k Spectrums and a Grey +2 What to get next. ZX Spectrum + ZX Spectrum 128 Toast Rack ZX Spectrum +3
... need only easy modification in internal structure (equations). ... floating bus). Ports acceleration can be also implement (instructions IN/ ... /fast/not contended (fast IN/OUT instructions)
- ... (not contended). Snow effect in videoram is fixed (disable ...The Ultimate Spectrum, made from old spectrumsGiven that all types of the Spectrum are less than ideal in one respect or another, I wondered what the ulimate refinement would be, but just using o…
... again!) to see if the floating bus mod had been done, it ... seeing a collection of diodes in the vicinity of the joystick ...The Ultimate Spectrum, made from old spectrumsGiven that all types of the Spectrum are less than ideal in one respect or another, I wondered what the ulimate refinement would be, but just using o…
... again!) to see if the floating bus mod had been done, it ... seeing a collection of diodes in the vicinity of the joystick ...yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…
... as found in the normal version, including multi-colour support, floating bus and ... number of features not found in the normal version, including:
In fact, I am pleased to ...Was the +3 a missed opportunity?I just wanted to gauge WOS opinion on this. Do people think that the +3 was a bit of disappointment that didn't really advance the hardware as much a…
... cheaper doing it all properly in the ASIC!
The ... of software that use the floating bus either :pCompiling Basic to MCHello, I have a lot of long Basic programs. These are mostly strategy programs, good but slow. I was thinking about how to speed them up without com…
... MCoder 3[/url]. It compiles floating points, multidimensional arrays and everything ... program) implies dynamic memory management. In a compiled BASIC program, DIM ... of you who have coded in C, I'm sure you have ... such a DIM a(b, c) statement in your BASIC code, and ...Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
... (0x01)
Contended IN? failed (0xfe)
Floating bus? skipped (B=0x01)
LDIR? passed
Contended IN? passed
Floating bus? skipped (B=0x01)
Contended IN? failed (0x03)
Floating bus? failed (0x00)
Contended ...Memory upgrade for ZX Spectrum 16/48This is external memory upgrade for ZX Spectrum models with 16kB ram. Can be connect also to 48kB models, but need remove 8 dram chips (from sockets …
... of reads on unattached ports (floating bus/not)
[/LIST]
[*]We ... on the level of interest in different machines/peripherals (low, ... there's the D80 interface in the Kompact, and there's ... m [I]really[/I] interested in getting working, though, is [URL ...
