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Idea for a new feature to compliment a debugger in an emulatorI had an idea for an emulator feature yesterday. Don't recall having seen this idea before, but I'm sure you'll correct me if it has. :) In that cas…
... game reads and writes - to get an idea of where and ... window where each pixel is equal to one memory address.
It ... darker the "closer" you would get to the heart of the ... -
sprite making in +3 BASIC?Any sprite tutorial I come across is far too complicated! Can someone help me? For instance, how do you create a person-shaped animated sprite which …
... use machine code to do pixel perfect sprites.
You just ... can get around even that limition as you can change the address ... detection, but convert it to pixel numbers.
eg. take the ... .
You now have the pixel position of the sprite that ... -
Convert x,y to Attribute Address in AssemblyWhat is the fastest way, given x,y (in hl) to return the attribute address?
... 're converting a pixel XY coordinate into an ATTR address, a table ... register (H and L) to get rid of the stuff you ... the resulting address.
Then again, if your (0,0) pixel is ... have your ATTR address.
If I get a few minutes ... -
Codies help? Werewolves of LondonHi All, never one for shying away from the deep end, having only just dipped my toe in to the world of machine code I find myself trying to find out …
... and poking A into the address HL.
[/quote]
< ... /> graphic was (50547)
HL = address in back buffer where sprite ... been traversed to
get to one pixel row down on left ... the pointer then jumps to address 44BB for no apparent reason ... -
TommyGun 0.8.5 available0.8.5 has been uploaded release updates include: * Heaps of bug fixes :) * A getting start guide on how to use TG Please try it and give me your f…
... the screen draws a pixel for every available bit in ... It took me ages to get all those colours into the ... br /> I will try to get a ME machine to test ... . (see readme.txt for email address)
... here or email the address in the readme.txt.< ... -
z88dkHello. I'm an spanish user of spectrum (and naturaly of this page). I have a question. I want to start to program games with z88dk, but I need a goo…
... marked so that they never get added to the draw list ... also contain their own screen address, so that they can occupy ... list).
For horizontal pixel rotation, each "struct sp1_cs" contains ... of screen that need drawing get redrawn
- No erasing ... -
Sprite adviceHello. So, I'm slowly getting to grips with Z80 assembly - currently equal parts frustration and enjoyment. Now looking for some advice to help shift…
... a screen pixel coord into a screen address and ;
; pixel position ;
ld a, h ; get h into a 1M 4T ... -
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…
... SP1, the frame graphic address specified in the move sprite ... sprite frame address and an offset for vertical pixel placement of ... the unshifted sprite frame address and the pre-shifted ... , it is possible to get character cell validation using sp1_ValUpdateStruct ... -
Sprite adviceHello. So, I'm slowly getting to grips with Z80 assembly - currently equal parts frustration and enjoyment. Now looking for some advice to help shift…
... , moves it to the first pixel row of the character lines ... subtract 8 from h to get it back into the correct ... simply finds the next valid address of a line on the ... -
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…
... calling the subroutine at address 0x38. Code should be ... />
In order to get our own interrupt subroutine in ... br />
[code]
; ADDRESS (HEX) LIBRARY DESCRIPTION
;
; d4f7 - d4fe SP1.LIB pixel buffer
; d4ee - d4f6 ... -
MAME on the Spectrum?Yes, I know it's currently AY's job to make ludicrous posts (a position he's filling in very well, until TKRAP returns), but just out of interest, if…
... the screen otherwise they would get there much more quickly than ... squeezed on by selectively dropping pixel rows, mainly above the invaders ... in its original location at address 0, with modified interrupt handling ... -
Sprite adviceHello. So, I'm slowly getting to grips with Z80 assembly - currently equal parts frustration and enjoyment. Now looking for some advice to help shift…
[QUOTE=48K]1/ Random number generator: I've started using a ld a,r command to grab a number from the memory refresh counter. Only problem is that if I do this in quick succession, the numbers are obviously not very random at all.
[/quote]
The New SPIN releases ThreadOk, as I'm now working on SPIN again full-time, and as a very wise man once said, "Release Early, Release Often"[1]... I'm going to release new SPIN…
...
Anyhow, A7 on the address bus during refresh cycles is ... scanline's low byte address) holds a rock steady ... Speccy I can get an 8 pixel shift for a ... 's restricted to 16 pixel resolution. This machine always ... think gives the 8 pixel resolution for a short ...The 128 plus 2 wasn't very goodHaving looked at the review in issue 33 of Crash of the Spectrum Plus 2, it strikes me as a bit odd, as if Simon Goodwin had to like it. I remember r…
... /> 3. The Timex 256x192 pixel, 32x192 attribute mode
... 4. The Timex 512x192 pixel mode
5. A ... in the z80's address space. This includes paging ... implement than a specific address range... but then that ... That's what they get for building a machine ...Timex Sinclair 2068Hi guys. This is my first post here, the first of many, I hope.. :) I have a Timex Sinclair 2068 but don?t know much about it. It was given as a gif…
... :-)
sp1_MoveSprPix() accepts pixel coordinates so you don't ... functions accept the absolute address for frame graphics now ... small difference in the graphic address specified during sp1_CreateSpr() and ... that I didn't get around to in the ...tips on optimizing assemblyI wrote a small routine to rotate right a whole screen character line complete with attributes. This is my third ever assembly routine, so I guess i…
... call gethl ; hl = screen address at column 31
ld ... hl ; save column 31 address
ld e,l< ... ld a,(de) ; get first byte in pixel row
ldd< ... br /> pop hl ; restore column 31 address ...tips on optimizing assemblyI wrote a small routine to rotate right a whole screen character line complete with attributes. This is my third ever assembly routine, so I guess i…
... ld a,(de) ; get first byte in pixel row
ldd< ... br /> pop hl ; restore column 31 address ... ; edit: jesus -- did i get it right yet?
address
;or $07 ; ...TommyGun 0.9.x updates** Should be available via the utilities page soon! Please be patient :-) ** I'll be posting all future updates in this thread, instead of creating …
... then set the bottom left pixel of the tile, then the ... not, then how would I get the "errors" over to you ... .
email to the email address in the about box.
Spectrum Issue two problemI managed to bring back to life a issue two spectrum (at least the power supply cirquit). The screen is now crystal clear (after replacing all the el…
... RAMTOP is set to that address. That's why on startup ... down on a black background (pixel and attribute areas filled with ... 4116 chips are easy to get a hold of anymore. There ..."chunky" gfxHas anyone some experience with coding "chunky" gfx routines ? (chunky is something like this [url]http://www.pouet.net/prod.php?which=13204[/url])
... physical resolution of the chunk pixel (besides, using only 4 ... first part of raster address
pop hl ; get second pair of ... br /> [/code]
The pixel format is 111xxxx0 (maybe it ... of T's per dithered pixel but unfortunately there are much ...Noob to Z80 needing +3 helpI'm quite new to z80 programming, but i'm attempting to write some kind of windowing system that will run alongside BASIC on my +3 with Kempston mous…
... expressions and you can probably get the interpretter to read expressions ... write mainly in C to get portions working and then ... a pixel (look it up), how can you get an attribute address for ... a specific pixel (look it ...My little first set of routines.Hi all, I just coded a little set of routines just to draw a screen on video mem and a fade out. I could have just copied the screen rendering rout…
... /> [code]
16-BIT SCREEN ADDRESS IN BINARY
==========================
< ... , when inceasing the y pixel position as in your subroutine ... from the display address in order to get to the start ... bits in the screen address following the LDIs and ...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?
... this:
1. Get byte to paint from character ... />
Additionally, when you get to column 32 when writing ... HL points at the right address.
It ... line where the next pixel is the next screen ... out where the next pixel shoudl be in the ...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?
... br /> ; Adjusts screen address HL to move one pixel down in the ... address
; exit : Carry = moved off screen
; HL = moves one pixel ... pushes/pops or exx to get it to work so I ... to avoid unnecessarily drawing blank pixel rows.
[quote ...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…
... I would suggest that you get IDA disassembler and look yourself ... to move sprite by 1 pixel at 25 fps, it ... say you'd use 2-pixel step in x-axis, ... is VRAM address
; in SP is address of sprite ... LD SP,HL ; HL holds address of background graphics
ADD ...Russian clone of ZX-Spectrum 48kThe classic russian clone of ZX-Spectrum 48k [URL="http://sblive.narod.ru/ZX-Spectrum/Leningrad48k/Leningrad48k.htm"]http://sblive.narod.ru/ZX-Spect…
... access to any I/O address). This creates problems with expansion ... text mode, 320x200x16 (graphics, every pixel in own color, EGA-compatible ... , however NedoPC team managed to get all the documentation from original ...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…
... to the destination address for the next pixel row. I think ... modify the buffer address when moving down one pixel row. z88dk ... one to get back to its original display address (the left ... modify the destination address to move down one pixel row. "f" ...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…
...
;GRAPHIC DATA:
;Pixel Size: ( 16, 24)
; ... the frame address, where frame address is the address of the ... () and sp1_AddColSpr() get the absolute address of each graphical ... function can specify relative address for each walking frame, ...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…
... address from pixel coordinates, screen address from column coordinates, attribute address from screen address, screen address ... from attribute address, character y coordinate from screen address -- you get ...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…
... hl,(_sbuf)" to get the value of " ... declared locally, to get its value you must ... the function runs. To get the value of " ... code]
;; hl = display address
LIB zx_saddrpdown ;; must tell ... hl = new display address down one pixel row
[/code ...
