-
The great escape bug?I'm not sure if this is a bug or something slipped in by the programmers but i've noticed that if you try and bribe a prisoner with the chocolate wh…
... /> 9eb2: ld hl, $a12f ;general counter
9eb5: ld a, ($a145 ... -
Block RoutineHi Folks, I want to draw a block on the screen dependent on providing the X,Y,W,H values. I came up with the following: [CODE]100 LET l$=" …
... "Row=";y,"Column=";x: INPUT "Height=";h,"Width=";w:
INPUT ... -
How to get the current line position of a +3e's text window?Does anybody know how to get the current line position of a [url=http://www.worldofspectrum.org/zxplus3e/]ZX Spectrum +3e[/url]'s text window? I've r…
... way - i.e. keep a counter that's incremented every time ... mode
; bit 5: double height mode
; bit 6: embedded ... -
The Hobbit 128K editionWhat's this?<br>What better to celebrate the new forum with, than a long-awaited release!<br><br>I got tired of all the quibbling over tiny details i…
... the community decisions, or a counter-argument against a bogus justification ... -
Look whats possible in 924 bytesSo, finally after over a year of development and nearly 25 years since I first designed the graphics, I've actually made it to the point where this i…
... counter to 00
ld b,a ;piece total height ... a,b ;test data counter
or a ;< ... or a ;test overlay counter
jr z, ... -
Look whats possible in 924 bytesSo, finally after over a year of development and nearly 25 years since I first designed the graphics, I've actually made it to the point where this i…
... counter to 00
ld b,a ;piece total height ... a,b ;test data counter
or a ;< ... or a ;test overlay counter
jr z, ... -
Thought this would be simple... Z80Hi Folks, Started to read "Beyond simple BASIC, Delving Deeper into your ZX Spectrum" by Dilwyn Jones. This is a great book and I came across the…
... a,$0A
ld (HEIGHT),a ; Height of polygon
; ... inc a ; Increment character counter
cp b ; Reached ... -
Thought this would be simple... Z80Hi Folks, Started to read "Beyond simple BASIC, Delving Deeper into your ZX Spectrum" by Dilwyn Jones. This is a great book and I came across the…
... a,$0A
ld (HEIGHT),a ; Height of polygon
; ... inc a ; Increment character counter
cp b ; Reached ... -
Thought this would be simple... Z80Hi Folks, Started to read "Beyond simple BASIC, Delving Deeper into your ZX Spectrum" by Dilwyn Jones. This is a great book and I came across the…
... a,$18
ld (HEIGHT),a ; Height of polygon
; ... inc a ; Increment character counter
cp b ; Reached ... -
1k Chess (was the 924 bytes thing!)Hi, I've decided to do a major rewrite of large parts of the code for the isometric Chess thing that I've been messing with. It got to the point, …
... :
push bc ;save height
current_square:
ld ... :
dec a ;DEC counter
jr nz,calc_lp1 ; ... -
1k Chess (was the 924 bytes thing!)Hi, I've decided to do a major rewrite of large parts of the code for the isometric Chess thing that I've been messing with. It got to the point, …
... /> ld bc,031eh ;B=counter, C=next offset to add ... B=height C=current square ;D=00 already for line counter
dec b ;DEC data counter
ld a,(ix+00 ... -
Drawing LinesHas anyone got any experience of coding a Bresenham line drawing algorithm on the Speccy? I've had a go and I find the algorithm has quite a few s…
... /> dec b ;decrease the length counter, exit if zero
ret ... you're testing the length counter, or how you're moving ... screen and 2/3 the height" in around 41-42 scanlines ... -
Products you do not see any more.I was sitting at work recently and my mind started to wander, thinking about some of the products I remember seeing in Catalogs and in department sto…
... / TVs were head height and the computers were counter top height. The computers ... -
How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... l, a
; B = loop counter
ld b, 8
; B = loop counter
ld b, 8
How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... l, a
; B = loop counter
ld b, 8
; B = loop counter
ld b, 8
Platoon TZX / Decryption toneDownloaded Platoon from the TZX vault earlier today. Kept crashing when loading into my real speccy via PlayTZX, and I i realised the Speedlock 6 dec…
... 200 for the decryption loop counter and now it runs correctly ...ZX Spin 0.3 ReleasedStandard Cut'n'Paste from CSS post again! I can't get to my webpage, so I've uploaded SPIN0.3 to WOS, Alt.Binaries.Comp.Sinclair, and also Daren Pea…
... either.
Added an FPS counter - click it to get % emulation ...Solution for overwritten stack in 48k SNA filesIt has been known for quite some time now that the 48k SNA file format has one serious fault, which is described in the file formats section on the W…
... a file separately, the program counter is pushed onto a stack ... and memory, pops the program counter from the stack and then ...Professional PiracyI was just wondering... Back in the early nineties I tripped into my local John Menzies (Dunfermline) to buy a few Speccy games. Having picked up a …
... took the cases to the counter to buy them. Imagine my ...Happy happy joy joy.What was the happiest moment in your Spectrum life? (To narrow this down, this thread doesn't include recieving the Spectrum, or buying your best ev…
... to buy up to the counter as usual. But the boss ...Bug on Cronosoft's Dead or AliveI can't believe this wasn't spotted before... I was recently puzzled to read a couple of reports of a bug on Cronosoft's Dead or Alive and as the pr…
... causes the score and lives counter to be displayed incorrectly during ...heighthow do i make a line of text centered vertically so it's in the middle of the screen?
how do i make a line of text centered vertically so it's in the middle of the screen?Decimals, bcd etc in z80...Working bloody full-time on my Ragnar Revival game right now - just finished the basic sprite engine and before I go on coding the actual 3d engine (…
... well as a time counter. The time counter, counting downwards, would perhaps ...Game loop design?Having some thoughts on how to design the game loop and could do with some hints and tips from folks who have done it before! It's all about how to …
... the interrupt function add a counter and then do a check ... the game loop: if this counter is above a certain number ... ), then subtract 4 from this counter and THEN check whether the ...Striker............In my opinion, the greatest game ever ! A while back i remember somebody mentioning a possible remake of this truly wonderful game, does anyone know …
... players on the pitch, a height gauge, team kits etc etc ...need help with speed optimization. this procedure draws a sprite with mask from memory onto the screen with x-coordinate in pixels. it doesn't shift sprites in realtime, it just uses …
... .)
LD A,(SPRYLEN) ; taking height of sprite (pixels)
LD ...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…
... ,up
down:
; Y Counter
LD A,(IX+3 ...
up:
; Y Counter
LD A,(IX+3 ...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] ; ***********…
... .
; Have a counter, when it reaches target, ... down:
; Y Counter
LD A,(IX+3 ... br /> up:
; Y Counter
LD A,(IX+3 ... br /> ; 8 = RO:Pause Counter
; 9 = Pause Target ...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…
... />
DEC IXL ;decrease loop counter
JP NZ, MODHLB ;and ... /> DEC IXH ;decrease row loop counter
JP NZ, ROWLOOP ;jump ...
