-
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, (lines ... lines: dw 16384, 16440, ...
[/CODE]
To save time ... in a table. To scroll in the opposite direction, ... /> lines: dw 16384, ...
[/CODE]
To customize this ... -
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, (lines+ ... lines: dw 16384, 16440, ...
[/CODE][/QUOTE]
:) Also we can ... SP=lines and all the scroll will look like POP HL ... 48
lines: dw 16384, ...[/CODE]
[/quote]
Looks ... -
emulators which support H/V scroll bars?You know, for years I've been using Fuse with a pokey little 4" window and moaning about it because the resize arrows didn't (appear to) work, then I…
... less of it and a vertical scroll bar appears at the right ... -
ZEsarUX Beta 7.2-RCHi I have uploaded a new ZEsarUX Beta version: 7.2 Release Candidate! Next version will be final stable :) You can download it from: https://g…
... export sprites to C source code file
Improved file ... error managing TBBlue Layer 2 vertical scroll
Fixed triggering "opcode" condition ... -
ZEsarUX stable 7.2Hi! I have uploaded a new stable ZEsarUX version 7.2! You must go to the Releases section on the GitHub project to download It, as usual: htt…
... /> And, of course, the source code, so people can compile it ... export sprites to C source code file
Improved file ... /> -Fixed error managing Layer 2 vertical scroll
-Fixed audio bug: sending ... -
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…
... accessing the video ram for vertical scroll, with a register indicating pixel ... simple VHDL blitters and the code is pretty small.
The ... -
2007, and still no NIC and browser for the Speccy?I've started to read all the w.o.s. threads, starting by the ones that came up with the search function, using the keywords of the topics that intere…
... - Browser would have horizontal and vertical scroll capabilities,
images would look ... done just to test some code while someone designs the interface ... -
Getting scr addresses from x and yCould someone please tell me how to calculate the 8 screen addresses corresponding to a character printed in basic at coordinates x and y? For examp…
... m.c. code routines will perfom horizontal or vertical scroll if needed, the ... -
help sought with first foray into machine code - pixel scrolldownI have started to code my first machine code program, a simple roadrace game. I've based it around the pixel scrolldown routine in 40 Best Machine Co…
... actually :)
[code]
exx
[/code]
[quote]
... ld sp,$57e0+32
[/code]
[quote]
This ... small program to generate this code block! Or perhaps this ... being able to set the vertical scroll speed.
If ... -
LDIR timings in contended RAM?The 48K Spectrum technical reference page ([URL="http://www.worldofspectrum.org/faq/reference/48kreference.htm"]here[/URL]) describes the detailed ti…
... you don't need to scroll the store in memory. ... buffer.
For a vertical scroll, move the point you start ... re-program that line of code to place the ADD ... your head around self-modifying code, this has the same ... described above for a vertical scroll. -
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…
... registers.
Appendix provides example code for getting started.
< ... br /> RSTYSCR 0x001F7704 DWORD Raster vertical scroll.
BGCOLOR 0x001F7708 DWORD ... PF0YSCR 0x001F7710 DWORD Playfield 0 vertical scroll.
PF0ARGB 0x001F7714 DWORD ... -
Add horizontal hardware scroll to ULA+In this case we must read a bit in the ULA+ for test if supported. And the future software that uses it must have to branch: 1. If hardware scroll i…
... url]
Source code here:
[url]http:// ... showed correctly (but the scroll in the emulator is ... of course without fine grain scroll).
3. The changes ... reserved for vertical scroll (5b38 if horizontal and vertical scroll are used ... -
Add horizontal hardware scroll to ULA+In this case we must read a bit in the ULA+ for test if supported. And the future software that uses it must have to branch: 1. If hardware scroll i…
... url]
Source code here:
[url]http:// ... showed correctly (but the scroll in the emulator is ... of course without fine grain scroll).
3. The changes ... reserved for vertical scroll (5b38 if horizontal and vertical scroll are used ... -
Subtract 4 from an addressThis is a novice Z80 question really: I'm trying to vertical scroll my back buffer, but I'm not sure of the quickest way to apply an offset and mo…
... The area I need to vertical scroll is therefore 18 chars wide ... like this:
[code][2 chars][18 chars row1 ... ][2 chars][18 chars row3]...[/code]
This way ... then the following code would work:
[code]
ld ... -
Comp.Sys.Sinclair Crap Games Competition 2017As the creator of the second-least crap game in last year's competition (and the only mug stupid enough to agree to host it this year) I am proud/ash…
... assume you're doing the vertical scroll for now. POKE any of ... in front of the machine code routine. A '1' followed ... in the bytes of machine code.
Lines 9140 ... /> Happy Scrolling!
[code]
VAT_Scroll
10 ... -
Using the stack to blit bufferI was using a ldir to blit my back buffer to the screen RAM, and it was working pretty well if not rather slow. After reading about using the stack …
... "]this is little up scroll:
[CODE]
credits_adr_from equ #40B2 ... /> LD H,A
ret[/CODE][/quote]
A couple ... working on an engine for vertical shooters in lieu of the ... -
forum mistakeIt may have been pointed out before, but; the post reply, new thread, etc. bottons are wrong. they read; [code] 10 print "post reply" 20 goto 10 ru…
... />
they read;
[code]
10 print "post reply ... reply post re
scroll?
[/code]
this ... should print;
[code]
post reply
post ... reply
post reply
scroll?
[/code]
... -
Improving JetpacJetpac remains a joy to play and was a marvel in its day. Apart from very slick prgramming in 16K it also had great replay value. You were armed with…
... gun rechargers
Perhaps add vertical scroll for later levels so that ... -
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…
... game game functions (1 pixel vertical scroll) also draw a multicolour sprite ... -
Colission detection problems.G'ah...it's always the same (I've asked before too) - I'm always struggling when it comes to doing box colission checks, so I'm basically hoping you …
... ;)
[CODE] ld a,l ; player' ... nc,cc02 ; not within vertical range.
; now ... cc02 ; not within vertical range.
[/CODE]
Subtract 4 from an addressThis is a novice Z80 question really: I'm trying to vertical scroll my back buffer, but I'm not sure of the quickest way to apply an offset and mo…
... />
I'm trying to vertical scroll my back buffer, but I ... . The area I need to vertical scroll is therefore 18 chars wide ...did anybody program games for their spectrum?did anybody make games for their spectrum and have you still got them in tap/z80 format. i once attempted to make a side scrolling game but it didn…
... />
A car game with vertical scroll had to avoid the cars ...Horizontal scrollDoes anyone know how to do a 2 or 4 pixel left or right horizontal scroll of the spectrum screen. I can make a 1 one pixel scroll with: ... rl (hl…
... several ways of optimizing the scroll code presented, but thats not the ... to do a one pixel scroll is like jonathan said, using ... do a faster 2 pixel scroll than call this routine 2 ...EmuZWin supports 256 color gamesI am sorry starting new topic, but you see this info is important a bit: new version 2.4 of the EmuZWin is available to download, and it supports 25…
... line and it scroll in such case together with vertical scroll of pixels ...What games exploited hardware speccy to the top level?Hello For you....what games exploited hardware speccy to the top level? thanks. greetings from Spain
... smooth and fast (again) multidirectional scroll. Althought I also would mention ... SoldierOfFortune multidirectional scroll also very good.
vertical scroll and major amount of sprites ...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…
...
Your original scroll:
[code]
alpos = ... while (alpos++ != almaxpos);
[/code]
could be ... while (alpos++ != almaxpos);
[/code]
You could ... (alpos++ != almaxpos);
[/code]
This way ...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…
... is no longer required. The scroll code must complete within 50000 cycles ... emphasis should be on keeping code size small.
#2 ...Whats Gone Wrong - Pixels Everywhere!Changed one small piece of code, that doesnt do anything to the screen and the following has happened: [img]http://www.officetrack.com/download/wos/…
The first question that comes to mind is how much memory do you have available and are you overwriting some part of the scroll code / scroll buffer :)
Or perhaps the stack is being polluted.Decent speccy pacman?Hi all, what's the best pacman game for the speccy? I currently have Muncher by Silversoft, Gobble a ghost by CDS , Gnasher by Mastertronic & Fast fo…
... don't mind the sloooow vertical scroll).Best intro in a game?We have discussed the best ending in the other thread, but it was very uncommon (at least for me) to actually see any endings back on the real Spectr…
[QUOTE=alchresearch;267581]I liked the intro to Trantor, where the ship went down into the caves then exploded.[/QUOTE]
It was a nice vertical scroll.
