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New tool: ZXBOOT.EXE[B]ASM[/B] is proud to present the first release of ZXBOOT.EXE: [url]http://www.4shared.com/file/NP-FVOSf/zxboot__beta_.html[/url] ZXBOOT is a comma…
... three 16K memory banks are contended.
I have completely ... -
Horace you smooth mover!Just wondered, was Horace the first character to move smoothly around the screen - rather than in a blocky, character space by character space fashio…
... but with use of the HALT statement you can control both ... to effectively raise a single HALT but BASIC is then too ... -
Learning Assembly LanguageHow easy would it be to learn assembly language for someone who has a decent grasp of Basic? I mean how long do you think it would take before I coul…
... />
start ei ; Needed for HALT, assume BASIC
ld ix ... frame.
vsync halt ; Wait for next 50hz interrupt ... -
Learning Assembly LanguageHow easy would it be to learn assembly language for someone who has a decent grasp of Basic? I mean how long do you think it would take before I coul…
... />
start ei ; Needed for HALT, assume BASIC
ld ix ... frame.
vsync halt ; Wait for next 50hz interrupt ... -
Genesis: dawn of a new day, new game from RetroWorks!It's been a long development, but finally we made it. We proudly present the latest game from RetroWorks, Genesis: dawn of a new day. [img]http://ww…
...
nop ;can be used HALT for 100% correct mouse testing ... -
Genesis: dawn of a new day, new game from RetroWorks!It's been a long development, but finally we made it. We proudly present the latest game from RetroWorks, Genesis: dawn of a new day. [img]http://ww…
... easy detect mouse:
HALT ;before test ports must is ... better used HALT (if tested hardware is disconnect ... easy detect kempston joystick:
HALT ;before test ports must is ... better used HALT (if tested hardware is disconnect ... -
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
... operations are accelerated/fast/not contended (fast IN/OUT instructions)
contended). Snow effect in videoram is ... -
zx spectrum +2 troubleshootingHi There I am new here and I need some advise as to where to look for issues on my zx spectrum +2 it was working fine this morning .. then while pl…
... a fault in the non-contended ram bank. of my +2 ... to 24 were the non-contended ram chips and IC 24 ... -
Just found this...I'm a little bored at the moment, so I've been looking through my browser's favorites and I've just found this site... [url]http://www.arcadeaid.com…
... night, then ground to a halt! It's pretty picky when ... -
Why doesn't my loop work?Can anyone help me understand why my loop doesn't work? Is it to do with how DEC HL affects the flags? [code] ; Read 32k bytes from port 191 as fa…
... of code that's in contended memory is the bit that ... -
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…
... means the entire RAM is contended, so you don't get ... -
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…
... /> Specifically, screen RAM - which is contended and with a compatible design ... always will be contended. A faster CPU will help ... -
Why doesn't my loop work?Can anyone help me understand why my loop doesn't work? Is it to do with how DEC HL affects the flags? [code] ; Read 32k bytes from port 191 as fa…
... or 128/+2(grey) exist contended and uncontended ports.
For ... , half of all ports will contended (slow down by ULA). ULA ... A14=1, ports is slow (contended)
If A15=1 and ... is set, ports is slow (contended)
Example of slow ... -
Other good oldschool computers?Hi! I'm a collector of games, and i looooooooove computers. I'm very much intrested in: -Amiga 500&1200 -Atari 8-bit -C64 -C16 -Spectrum -QL -CoCo -…
... C128 suffers from a heavily contended architecture that lowers its effective ... -
Z88DK/SP1 library u_malloc() questionHi All, It may possibly be more appropriate for me to post this on the Z88DK forum, but I know quite a few WoSSers have used Z88DK, so here goes:- …
... game code now resides in contended RAM. Also have my heap ... and therefore sprite data in contended RAM too. In high RAM ... -
New game coming soon: PhaetonI have thought that I'll announce it now to build some anticipation ;) I'm almost ready with my new Spectrum game called [B]Phaeton[/B]. It is a g…
New game coming soon: PhaetonI have thought that I'll announce it now to build some anticipation ;) I'm almost ready with my new Spectrum game called [B]Phaeton[/B]. It is a g…
[QUOTE=Ralf;501215]I could do a Spectrum model detection at the start of the program and adjust my code appropriately, although I have no idea at the moment how to detect Pentagon[/QUOTE]
Best way for detect Pentagon is test CPU speec (number ...Z88DK/SP1 library u_malloc() questionHi All, It may possibly be more appropriate for me to post this on the Z88DK forum, but I know quite a few WoSSers have used Z88DK, so here goes:- …
... infinite lives poke is in contended RAM, how embarrassing :D )
Z88DK/SP1 library u_malloc() questionHi All, It may possibly be more appropriate for me to post this on the Z88DK forum, but I know quite a few WoSSers have used Z88DK, so here goes:- …
Yes, I agree Timmy. Using contended memory is a fact of ... running time-critical sections in contended RAM, but for these games ...Best way for programming in BASIC?New to the ZX Spectrum, and fixing up ccowley's vbSpec emulator. Aside from that, I would also like to try programming a game or two in BASIC. What's…
... line basis? How do you halt execution and single step to ...Best way for programming in BASIC?New to the ZX Spectrum, and fixing up ccowley's vbSpec emulator. Aside from that, I would also like to try programming a game or two in BASIC. What's…
... line basis? How do you halt execution and single step to ...contended memory...so memory contention on the toastrack and the grey +2 is in the wrong place compared to the documentation, yet the +2a/b and +3 it is in the correct …
... have odd banks contended and even banks non contended, and +2A/B ... banks 0-3 non contended and 4-7 contended. Is this right ...contended memory...so memory contention on the toastrack and the grey +2 is in the wrong place compared to the documentation, yet the +2a/b and +3 it is in the correct …
... have odd banks contended and even banks non contended, and +2A/B ... banks 0-3 non contended and 4-7 contended. Is this right ... because of the differences in contended memory.
And reading ... to the issue of the contended memory could the toastrack/+2 ...New game idea (still top secret), but I need input.For a new game I need all kinds of actions that a player needs to do to activate something, but the action must be maintained all the time. I don't…
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…
... ; enable interrupts
halt: halt ; halt
jr halt
executive: ei ...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…
... generating dangerous code (such as HALT, IMn, EI, DI). Assembler shall ...Speccy 128 Shadow screen.How much is the shadow screen used in 128k commercial software? I ask because I am looking at putting 128k of memory in the 48k setup I have been bu…
... bank (all of it is contended), and the 32K RAM with ...Speccy 128 Shadow screen.How much is the shadow screen used in 128k commercial software? I ask because I am looking at putting 128k of memory in the 48k setup I have been bu…
... bank (all of it is contended), and the 32K RAM with ...Help?Hi All, I wonder if anyone has a few minutes to look at this bit of code I'm working on. I'm trying to move to sprites and want to do it with a scr…
...
ld (seed),hl
halt ;just so I can see ... what's going on.
halt
ret
sprite ld ...Speccy 128 Shadow screen.How much is the shadow screen used in 128k commercial software? I ask because I am looking at putting 128k of memory in the 48k setup I have been bu…
... the +2A, with different banks contended looks like a pain in ... , but only the other two contended ones. Great.
