-
Spectrum AssemblyHi All, Thanks for letting me in... lol Over the last couple of days I started playing my spectrum emu again and then I started thinking about lear…
... a fast full screen vertical scroll:
[CODE] ld hl ... stored in a table. To scroll in the opposite direction, just ... , (ix+1)
ld bc, (width)
ldir
inc ix ...
height: db 153
width: dw 3
x_off: db ... -
Spectrum AssemblyHi All, Thanks for letting me in... lol Over the last couple of days I started playing my spectrum emu again and then I started thinking about lear…
... a fast full screen vertical scroll:
[CODE] ld hl ... SP=lines and all the scroll will look like POP HL ... , (ix+1)
ld bc, (width)
ldir
inc ix ...
height: db 153
width: dw 3
x_off: db ... -
Maze Mania - How did they do it?Hi, I was looking at the game "Maze Mania" by Hewson Consultants, written in 1989. The game can be downloaded from here [URL]http://www.worldofspec…
... it takes about 3s to scroll the width of an entire screen ... -
Brand new River Raid remake?one of my friend is trying to make a riverraid remake on flash just to have fun, I checked zx spectrum port of river raid. it is bad, really bad, jer…
... the ROM routine takes a variable amount of time) or that ... working would be having your scroll routine run in a fixed ... -
Brand new River Raid remake?one of my friend is trying to make a riverraid remake on flash just to have fun, I checked zx spectrum port of river raid. it is bad, really bad, jer…
... is exactly 256 pixels in width:
[img]http://www.veanewmedia ... , we don't have to scroll any pixels, just attributes will ... -
I just picked up a free Atari 520stJust got a free 520ST, (no cables or leads) and a small box load of games. :? dunno what to do with it, but it was being thrown out, so I grabbed it…
... achieved by changing the display width for the top few lines ... allows for a smooth vertical scroll in pixel increments, and a ... 16 pixel horizontal scroll.
To get the ... -
Interface 1/Printer problemAre there any known incompatibilities between the Interface 1 and the standard ZX Printer? I've now had three working printers die on me. They were…
... then that is the maximum WIDTH of a serial printer but ... of the other 'unused' System Variable 23681 can cause blank output ... -
48K BASIC to ZX81 BASIC conversion possible?Looking for an automated way of converting a BASIC program done on a 48K Spectrum to one for the ZX81. It's obvious that some things cannot be done o…
... should be changed to single-variable and there should be multiple ... normally ask a Speccy to "scroll?"), it will stop, printing backspace ... -
48K BASIC to ZX81 BASIC conversion possible?Looking for an automated way of converting a BASIC program done on a 48K Spectrum to one for the ZX81. It's obvious that some things cannot be done o…
... should be changed to single-variable and there should be multiple ... normally ask a Speccy to "scroll?"), it will stop, printing backspace ... -
More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.
... textbox, you can type the width of the sprite (in characters ... characters in width just type 3 there. Then you will scroll and ... -
New Game and HelloHi All, Long, long time lurker and contributor (hardware index, PiMan files etc..) but having been quiet for a few years I thought I might register. …
... 't have all that to scroll past in the type 0 ... the game. Using the direction variable saves you from using A ... -
Fresh 48K beeper music onlineRecently there was increase of 1-bit music activity. For those who are interested, here is links to online MP3 versions of the new releases, all made…
... somewhat similar, but produced through variable pulse-width. -
Detecting ZX Interface 1 ROM VersionIs there any way of checking which version of the ZX Interface 1 is present? I know that the later ROMs were better at networking - what other impro…
... versions at Geoff's site. Scroll to near the bottom of ... when printing (uses unused system variable 23728 )
4) uses up ... -
Double Dragon 128k - The graphicsAs you are all probably aware, I tried gathering a team of people together a few years back to make a totally re-programmed version of Double Dragon …
... this right... Your okey with variable row width (Im assuming units of ... far, 32 or 48 pixel width sprites)... How high is each ... -
Mr Do! ?Not exactly a new idea (at least twenty-seven years old now :-o), but how about a port of Mr Do! to the Spectrum? There was never an official one, ev…
... /> That's for height - in width it only takes up 24 ... so that the screen would scroll vertically if you need to ... -
Mr Do! ?Not exactly a new idea (at least twenty-seven years old now :-o), but how about a port of Mr Do! to the Spectrum? There was never an official one, ev…
... between turns - 16 for the width of the sprites, plus 8 ... for the width of the walls. I believe ... , 12 units wide. If the width is reduced to 11 units ... screen will still need to scroll vertically. This requires a buffer ... -
Mr Do! ?Not exactly a new idea (at least twenty-seven years old now :-o), but how about a port of Mr Do! to the Spectrum? There was never an official one, ev…
... between turns - 16 for the width of the sprites, plus 8 ... for the width of the walls. I believe ... , 12 units wide. If the width is reduced to 11 units ... screen will still need to scroll vertically. This requires a buffer ... -
The Programmers Development System (PDS)Hi everybody, I recall this system has been mentioned several times on WoS forums. Last time was, I think, when those sources from Maz Spork (Buggy …
... . As the cursor movment and scroll is rate locked to 60hz ... using an MS-DOS environment variable.
The editor can ... -
The Programmers Development System (PDS)Hi everybody, I recall this system has been mentioned several times on WoS forums. Last time was, I think, when those sources from Maz Spork (Buggy …
... in VRAM (not pixels). The width and height of a sprite ... round on itself... so to scroll the screen, you only need ... />
full_scroll
shadow_off
scroll 64,64
screen_on
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…
...
Y velocity
Width in pixels
Height in ... following paramaters:
scroll flags (1 = track player one ... position is subtracted from the scroll position. If the result ... />
All object and scroll positions and their velocties should ...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…
... over playfields.
Sprite width/height may be an even ... Value Description
0000 Width / height is 2 pixels ...
Table 2.7 - Sprite width and height sizes
scroll.
BGCOLOR 0x001F7708 DWORD ...RFC: 64 column font codeIn BASIC, type CLEAR 49999 then import the code at 50000. Then type RANDOMIZE USR 50000. This will create a new channel and attach stream #4 to it. A…
... /> ; so look at the system variable PROG
dec hl ; move ... 0 ; col
; HALF WIDTH 4x8 FONT
; Top row ...RFC: 64 column font codeIn BASIC, type CLEAR 49999 then import the code at 50000. Then type RANDOMIZE USR 50000. This will create a new channel and attach stream #4 to it. A…
... , a seperate routine used to scroll the paper (window) up on ... returns.
A half width blinking cursor might be nice ...RFC: 64 column font codeIn BASIC, type CLEAR 49999 then import the code at 50000. Then type RANDOMIZE USR 50000. This will create a new channel and attach stream #4 to it. A…
... , a seperate routine used to scroll the paper (window) up on ... .
[/quote]A half width blinking cursor might be nice ...50Hurts - Full-screen 50Hz 1-pixel scrolling on a 128K Speccy50Hurts - Full-screen 50Hz 1-pixel horizontal scrolling on a 128K Speccy. Graphics are an obvious nod to Joffa, whose games and banter were a big ins…
... get to tweak one pixel width of detail at each end ... . I wrote an ST parallax scroll that copies rows of screen ... wrap-around buffer. This Speccy scroll copies sequences of PUSH statements ...50Hurts - Full-screen 50Hz 1-pixel scrolling on a 128K Speccy50Hurts - Full-screen 50Hz 1-pixel horizontal scrolling on a 128K Speccy. Graphics are an obvious nod to Joffa, whose games and banter were a big ins…
... -pixel wide window and pre-scroll them 2 pixels at a ... 't do the full screen width?Proportional Print Routine...Hi Folks, Does anyone know of a good proportional printing routine for the ZX Spectrum? Ideally I am looking for something that prints with charact…
Here's another mod for na_th_an's program which uses a bit of machine code to do the line wrapping calculations. Just a first draft; it could probably be tightened up a bit.
[code]
10 CLEAR 62999: GO TO 1000
...
...Proportional Print Routine...Hi Folks, Does anyone know of a good proportional printing routine for the ZX Spectrum? Ideally I am looking for something that prints with charact…
... !"
; POKE the UDG system variable and store the UDGs somewhere ... b, a
ld a, (width)
add a, b
ld a, b
ld (width), a
ld a, (coords_x ... :
defw font - 352
width:
defb 0
