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Simple text scrolling routine...I'm having trouble writing a very simple text scroller, the idea is to use the ROM printer routine to print 32 characters each time the routine is ca…
... I also did a diagonal scroller, which would be too slow ... be slightly longer than the horizontal version as otherwise it's ...
inc de
push bc
push de
ld bc ... writing a very simple text scroller. "
datz:
[/ ... -
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…
... to pause or do a push-scroller). And call [b]USR 63033 ... want.
With the horizontal version, the same calls work ... -
Demo effectsRight, erm, first of all, since this post is about demos, it's possibly not right to post it in the Games forum, but it didn't seem right posting it …
... , what demos do you think push the Spectrum (be it 48K ... Overscan demo, that had full horizontal lines, even in the border ... -
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…
... 4 pixel left or right horizontal scroll of the spectrum screen ... -
Advice about drawing sprites on spectrum I've coded sprite drawing before and know all the theory about masks from a long time ago (microhobby rules! ;), but since I did it on Amiga with ha…
... pages, I implemented a "push-many-timer" scroller, great fun&speed ... -
Machine Code Sprites Example Code Using Char Based SystemBelow is my WIP code to do smooth screen wrapping sprites using char positions and offsets, as opposed to writing direct to a line (0-191) and shifti…
... br />
Spriteloop:
PUSH BC
CALL ... CP 0
JR Z,horizontal
AND 240
... br />
JR horizontal
dn1:
... -
IM2 Machine Code Sprites Example Code Using Char Based SystemFurther to my earlier post, here are sprites running using char method with IM2 driving it Note, for 48k spectrum using TASM [code] ; ***********…
...
PUSH AF
PUSH BC
PUSH HL
PUSH IX
Spriteloop:
PUSH BC
; Is ... CP 0
JR Z,horizontal
AND 240
... -
Smooth Screen Scrolling RoutineHi everyone, this is a follow up to the thread on smooth screen scrolling. As promised here is the code for the routine. It's pretty long and fairl…
... /> LD SP,HL
PUSH BC
PUSH BC
... LD SP,HL
PUSH BC
PUSH BC
... LD A,E ;reset the horizontal screen
AND 224 ;position ... />
RLOOP PUSH BC
PUSH IX
PUSH IY
How many T-states takes PUSH DE ?Hi. Just a quick one. According to z80.info docs, a PUSH DE should take 11 T-States to be executed. But WHAT if SP is pointing to Contended Memory,…
... to z80.info docs, a PUSH DE should take 11 T ...Game I've forgottenRight, so in a question from another forum : "Which type of space shooter do you like?", which allows the answer overhead or side-view scrollers. I b…
... , which basically is a vertical scroller shoot-em-up, that also ... line up in height and horizontal axes, and shoot the enemy ...Scroller exampleThis is just a silly scroller I made today. I'm really proud. :) [url="http://www.basslab.net/ScrollerSnap.SNA"]http://www.basslab.net/ScrollerSnap.…
This is just a silly scroller I made
today. I' ...don't go Vista matesaGreetings. As you well know, there has been a massive campaign to push Vista into the users. I'm against it and always will be. Most of the ancient s…
... been a massive campaign to push Vista into the users. ... a feature I call horizontal navigation. If you think ... horizontally. In Vista, the horizontal navigational style--which debuted in ... submenus in each section require horizontal navigation as well. Have ...horizontal shmupsare there any speccy horizontal shmups where you freely move your ship (or whatever) pixel-by-pixel except penetrator? (i?m glad to realize, the lack…
are there any speccy horizontal shmups where you freely move ...Playstation 3 "final push" on UKRThis says it all about the PS3 launch: [url]http://www.ukresistance.co.uk/2007/03/europe-at-war-final-push.html[/url] My favourite picture is this …
... /03/europe-at-war-final-push.html[/url]
My ...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…
... now that needs a final push to get done.
scroller reads the rendered double-width ...IN 255 behaviour not emulated in Spectaculator and ZXSpinI'm not speaking about "normal" IN 255 behaviour. All of you know what I'm taking about: IN 255 can be used to "read" screen data as it's retrieved f…
... a program with the horizontal retrace.
BucTest push bc
call ... /> PrintHex proc
push af
and 0f0h< ...Rainbow Generator for 48K Spectrum using PUSHThis is what I came up with from [B]gasman[/B]'s suggestions. It's stable in ZXSpin and ZX32 simulating a 48K Speccy. Anyone like to try it on the …
... Pointer:
push af
push bc
push de
push hl
push af
push bc
push de
push hl
push ix
push ... from registers
push de
push bc
push af
exx ...My first program - a vertical scrollerHi all, I'm new here. Nice to meet you all! A couple of weeks ago I decided to learn Z80 assembly language. I spent many hours in front of the Spec…
... /> It's a little vertical scroller. My goal was to get ...The Spec-chum 100 Push Ups challengeHi Spec Chums! I found this website last night, which says you can train to do 100 push ups in 6 weeks: [url]http://hundredpushups.com/[/url] It h…
... can train to do 100 push ups in 6 weeks:
push ups you can do when ...Push/Pop data copyingWe all know that stack pointer cheese and push/pop is faster to move data than LDIR - which in turn is slower than unrolled LDI's anyway. I rewrote …
... that stack pointer cheese and push/pop is faster to move ... mojon's fourspriter to use push/pop, but copying a four ... screen takes three cycles of push/pop.
What's ...What's wrong with this code ?OK, working my way through Jonathan Cauldwells 'How To' tome and I can't get the following to run in either spin or basin. ( iused the assembler in b…
... outermost bit = key 1.
push af ; remember the value.
push af ; remember the value.
ld a,(ply) ; player's horizontal position.
rst 16 ; set ...Some thoughs about fast scrolling on 128 modelPlease, consider this article as technically interesting concept not a proven algorithm. ONE The fastest scrollers use long sequence of PUSH inst…
... scrollers use long sequence of PUSH instruction. PUSH can be used as ... emulated registers.
Emulation of PUSH instruction can look like
ld hl, (register_x)
push hl
[/CODE]
Stop ... we have 2/3 screen scroller in 80k T. Quite nice ...Trouble with rainbow effect push/popI'm having a bit of bother getting my rainbow graphics to behave themselves. Basically I want a rainbow effect to last for say 4 seconds before movi…
... problem is if I omit push and pop bc the thing ...
in a,(254)
;push bc
call flash
MGT MOUSE - exist really ?I read disassembly of +D rom/ram code and from address #2249 is routine for read MGT MOUSE ports. I can't find any info about "MGT MOUSE". Exist real…
... Return if there was no horizontal or
2254 RET Z ... HL,#228B,SIGN_MOUSE
2258 PUSH HL
2259 LD HL ... ,#2275,MOVE_VERT
225C PUSH HL
225D IN D ...Push 'n' ChaseIt is my great pleasure and honor to announce the release of PUSH 'n' CHASE a game made with CGD featuring a wonderful loading and intro screen …
... release of
PUSH 'n' CHASE
push the mines all over ... "buy" your traps (push the money bags over the ... the water. Everytime baddies push the green button(s) ... into mines, You can push the crates against obstacles ...Developing "Push n Chase" into a good gameI was wondering if anyone would like to help developing my CGD "Push n Chase" into a good game. [url]https://www.youtube.com/watch?v=cdZ5XYbterc[/u…
... to help developing my CGD "Push n Chase" into a good ... become traps which you can push to kill your enemies. If ... to buy the crates (you push money bags against special blocks ... ). Sometimes you are supposed to push blocks to clear the way ...Protek Joystick Interface with push buttonI have come across this Protek joystick interface - it does not appear to be their switchable version, but has a push button on the front: [url]http…
Text scroller and custom fontYesterday I was testing this text scroll routine taken from Jonathan Cauldwell's Intro Maker (labels have been inserted to allow partial code relocab…
... displayed at this height
PUSH HL
LD B,008 ...
L_35420: PUSH BC
PUSH HL
LD B ...Function with push and popIm trying to see if I understand push and pop when it comes to using to pass parameters to functions: [code] LD HL,16384 LD A,5 Push AF Ld A…
... to see if I understand push and pop when it comes ... />
LD A,5
Push AF
Ld A,7 ...
Push AF
call addfunc
ADD A,B
Push af
ret
