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Reason for strange display layout?I have always wondered if there is any technical reason behind the strange layout of the display file or why did Sinclair choose to do it this way?
... next scanline or L to move one character cell right. The ... buffer a 'raster' image in memory (laid out like a bitmap ... -
Reason for strange display layout?I have always wondered if there is any technical reason behind the strange layout of the display file or why did Sinclair choose to do it this way?
... /> ; Adjusts screen address HL to move one pixel down in the ... routines to make them as fast as possible -- this add would ... -
Game Programming Source Code & Startup HelpHi there, I'm planning on porting an existing commercial title to the speccy. I'm in the process of disassembling the original code and commenting i…
... pixels. Do you need to move sprite by 1 pixel at ... storage of sprite data into memory. In order to speed up ... instruction to fetch graphics from memory:
[code]
; in HL ... -
New speccy part 2As a quick recap, I am looking to create a 'new speccy hardware' platform, which will retain the charm of the original 48k beast. The way intend to …
... it will run twice as fast anyway?) much of it is ... complex APIs, all which take memory and disk space.
memory). Everything else is applications, services ... -
New speccy part 2As a quick recap, I am looking to create a 'new speccy hardware' platform, which will retain the charm of the original 48k beast. The way intend to …
... it will run twice as fast anyway?) much of it is ... complex APIs, all which take memory and disk space.
memory). Everything else is applications, services ... -
WoS hits 500 permission statementsIt's been a while since I asked, but since we reached our 500th permission statement from individuals today, I thought I'd remind you all again: If …
... I read somewhere. It was fast at making moves compared to ... ever used (or understood) that move. The main reason for me ... -
Converting m$ to dataI created a maze using a matrix of 704 characters. In order to save memory, and since the maze it's just walls and spaces which could be interpreted …
... characters. In order to save memory, and since the maze it ... doesn't need to be fast or fancy. In that case ... -
GP2X - Spectrum EmulationHi all. Looking for advice on the GP2X and (especially) the quality of its ZX Spectrum emulation. Has anybody anything to say about the console - is…
... for more files, allowing fast advance in the games ... z80 format bugs, enabled memory contention emulation and added ... s due to contended memory emulation, which was only ... seems to run a might fast ( not overclocked ).[/QUOTE]
fast, but not as fast as it ... -
Sceen$ helpMost people have used screen$ at some time or another and for me what I want to do is use it or something like it as a start screen before the game p…
... know the exact addresses in memory I can use, but as ... />
To copy SCREEN$ to memory address 32768
LD ... basic program
To move it back to the screen ... -
Sceen$ helpMost people have used screen$ at some time or another and for me what I want to do is use it or something like it as a start screen before the game p…
... the the other three in memory the image would be 'shifted ... illussion of a 1 pixel move.
Does this help ... is good info to the memory map in the orange basic ... -
Sceen$ helpMost people have used screen$ at some time or another and for me what I want to do is use it or something like it as a start screen before the game p…
... the the other three in memory the image would be ... so copying the UDG memory by an offset of one ... to the start of UDG memory, and by POKEing these ... UDGs from somewhere else in memory without actually having to ... POKE 23675,89 will move that location along by one ... -
ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…
... is easy to have sprites move in front of or behind ... moved lower (to address 53248; memory map details are always documented ... just went ahead and malloced memory for the independent struct_sp1_cs without ... 'd need to free that memory when done. You could do ... -
I have joined the Dark SideGone and bought a PS3 that is. Even after all of the posts I made about not getting one as they were so expensive I succumbed and sold my 360 (and o…
... a nice "play anything from memory card" setting!
... />
Media Content on the Move
Since November, PS3 owners ... PS3 system to a Memory Card or Memory Card (8MB) (for ... their PS3 system and a Memory Card Adaptor.
... -
I wonder if . . .An M68k could emulate a ULA. You know, like the ZX80 used the cpu for rastering the picture on the screen. This would mean that the people who clone…
... not just reading the display memory - you'll also have to ... got to have a very fast processor - realistically, for a high ... -
Comments for small "sprite" routine wantedI have just written my first machine code program and I am quite happy (and proud) to get it working! :smile: As a child I never learned anything e…
... ;write to screen memory
dec hl ;move back one character to ... the left
inc h ;move down one line
dec ... -
Comments for small "sprite" routine wantedI have just written my first machine code program and I am quite happy (and proud) to get it working! :smile: As a child I never learned anything e…
... byte from graphic store in memory
ld (hl),a ... d=number of characters to move to right
ld ...
dec hl ;move back one character to the ... br />
inc h ;move down one line
djnz ... number of total characters to move graphic
jr nz, ... -
Comments for small "sprite" routine wantedI have just written my first machine code program and I am quite happy (and proud) to get it working! :smile: As a child I never learned anything e…
... byte from graphic store in memory
ld (hl),a ... br /> dec l ;move back one character to the ... />
inc h ;move down one line
djnz ... /> moveonecharacter
inc l ;move one screen byte to the ... of total characters to move graphic
jr nz ... -
Big BrotherHere we go again...zzzzz. Is anyone interested? Surely the novelty wore off about 4 years ago.
... Victoria Beckham and wants to move to Madrid and then LA ...
?I talk too fast, I talk too much ... I ... -
How does interrupts work?I am a little confused regarding the interrupts on the Spectrum. If I have some hundred bytes of machine code started with, say, [B]RANDOMIZE USR 300…
... the screen area of the memory is done when the TV ... erase their trails as they move. Move them a large distance and ... -
How does interrupts work?I am a little confused regarding the interrupts on the Spectrum. If I have some hundred bytes of machine code started with, say, [B]RANDOMIZE USR 300…
... your code in uncontended memory. Access to memory addresses 16384 to 32767 ... use (say) INC H to move down a line on the ... generic CALL scr_down_line routine etc. Move sprites can be updated before ... redraw sprites if they actually move (or their frame number ... -
How does interrupts work?I am a little confused regarding the interrupts on the Spectrum. If I have some hundred bytes of machine code started with, say, [B]RANDOMIZE USR 300…
... in time?
Does it move from left to right from ... unusal display file in the memory get converted to the top ... happens if you want to move your sprite and first delete ... place?
If you move the sprite (for example one ... -
How does interrupts work?I am a little confused regarding the interrupts on the Spectrum. If I have some hundred bytes of machine code started with, say, [B]RANDOMIZE USR 300…
... .
[QUOTE]Does it move from left to right from ... unusal display file in the memory get converted to the top ... -
New proccessors of the future and the Speccy[url]http://www.embedded.com/showArticle.jhtml?articleID=15201862[/url] I was very interested in the part where it said "old embedded processors nev…
... , 6, 7... Things were happening fast, but then everything slowed down ... a chip (each with individual memory channels), not 2 x dual ... -
Game OptimisationBelow is a section of code Im using for movement enermy display and collision detect. What happens is that you move the sight with ,.qa and space do…
... time (which is held in memory after all the variables).
memory?
Edit:
[URL ... $ is close to twice as fast as defining it as A ... -
Making your own joystick interfaceJust spied the diagram for the kempston joystick interface in the docs section. For someone who has only made up cables, what is involved in constru…
... for microcontrollers and aren't memory mapped, and are also horribly ... well). I'm hoping a fast ATmega will be able to ... -
Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... anyone else wants things to move along differently, I'm entirely ... 65535.
Variables holding memory addresses can be declared in ... pointer in C actually means move ahead n elements. The " ... adding 1 to "pi" means move ahead one integer, equivalent to ... -
Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... variable at a specific memory location. In this program ... write. Likewise in our memory buffer we can write ... move down that pixel row. In the case of the memory ... to move down a pixel row. This keeps the memory ... display (or in the memory buffer) and "buf" ... -
A challenge thats probably impossiblehere's a challenge for all you coders. Given a snapshot, is it possible to create a program to sniff out the original start address for the game that…
... start address when we have memory snapshot - I did it in ... , finding start address was preatty fast, under 20 minutes certainly.
ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…
...
BAQTBL(2) // two memory queues
/*****************END ... move stack at initialization to $ce00
// Memory ... ba_Malloc(1); // allocate memory for char structs from ...Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... modify a destination address to move down a single scan line ... rewritten to do it a fast way where if there is ... 's forget about it and move on knowing everything works as ...
