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New game: ZoomBloxHi everyone, this is my first post here, so first off I'd like to say hello to the Spectrum development community :) I've been developing on an…
... particular game use 10 rows by 8 columns of tiles (not including ... -
in game screenshotsnow that everything is settling down could I add a request [-O< Could the new software pages have a "more in game screenshots" area that allows mo…
... just integer scaling the original by 8. You're just moving the ... -
z80 Helper?When you are programming with z80 do you get 'lost' you are in the middle of making a routine and you can't remember which registers are holding val…
... would only be easily understandable by you. In the end, ... .asm.m4#L34"]ideal 8x8 multiply by a constant[/url]. That's ... of non-trivial operations described by the macros. The display structure ... need an inlined ideal 8x8 multiply" might be a candidate for ... -
how does this multiplication routine work?taken from chuntey wordpress: imul ld e,d ; HL = H * D ld a,h ; make accumulator first multiplier. ld …
... all the time when you multiply numbers together in base 10 ... each multiplication step is a multiply by 1 or 0, ie you ... -
z88dk multicolour enginesI've been trying to work out how the multicolour sprite engines have been implemented in z88dk. It's not obvious. Looking in the source, I found …
... , but only on a divisible-by-8 horizontal pixel. Otherwise, yes, colours ... of the docs being written by people intimately familiar with the ... -
z88dk multicolour enginesI've been trying to work out how the multicolour sprite engines have been implemented in z88dk. It's not obvious. Looking in the source, I found …
... , but only on a divisible-by-8 horizontal pixel.[/quote]
by people intimately familiar with the ... -
A Neat Redefine Keys RoutinePreviously, I’ve only shared this routine with a couple of people via PM, but I’ve now decided to make it public. I optimized it for size, so it uses…
... shift it into the 1–8 range (rather than 0–7 ... ;shift C 3 times (divide by 8) to bring
srl c ... -
A Neat Redefine Keys RoutinePreviously, I’ve only shared this routine with a couple of people via PM, but I’ve now decided to make it public. I optimized it for size, so it uses…
...
;Redefine Keys routine
;By Ast A. Moore
;(c ... A right 3 times (divide by 8) to bring
rrca ; ... keys pressed together (as mentioned by @colonel32) will need to ... for joystick control, just by injecting different ports and masks ... -
Other than using attributes what other ways to detect collisions, when using char based movement?So I'm slowly working out the bits and pieces to write a game completely in assembly. I've been using attributes when writing in BASIC to detect whet…
... the start. We get that by putting the Y co-ordinate ... instead. So instead of multiplying by 32, you effectively start with ... it multiplied by 256 and divide that by 8. ( 256 / 8 = 32 )
Proportional-width fontsFor reasons that are still not quite clear to me (because I’ve always loved typography and design,) I never bothered to write a proportional-font rou…
... a,ixl ;increase x coord by char width
ld ixl ... addr to be cleanly divisible by 8
;else, use INC HL ... : 7 bytes of bitmap followed by one byte of character width ...Modern Speccy games with good scrollingOne of the things I like the most on the Spectrum is also one of the hardest to pull off - a good scroll in an arcade type game. Uridium is one of my…
... screen. Once it's moved by 8 whole pixels you can copy ...Getting an even random numberWhat would be the best, simplest way to do this ? I was thinking of say: A = RND*100 Then a conditional along the lines of: IF A / 2 <> I…
Get a random number which is an integer, then multiply by two.Getting an even random numberWhat would be the best, simplest way to do this ? I was thinking of say: A = RND*100 Then a conditional along the lines of: IF A / 2 <> I…
Printing text, part MMXIIXI'm pretty sure there's been a zillion threads about this already, and I don't think it's the first one by myself either, but here goes. Proportiona…
... g 4 -> b
; -8(ix) = i 2 -> local ... add hl, hl ; aY * 8
add hl, hl
; loop for 8 scanlines
ld a, #0x08 ... widths
94*8 bytes of glyph pattern ... data is pre-multiplied by 8 so only a *2 ...ZX Spectrum rescued from a friend, has Issues.Hi guys, I've recovered this ZX spectrum 48K from a friend. It's a 1984 ISSUE 6A. He told me the last time it was turned on was about 30 years ago!.…
... still pulled up by 8.2k resistors and buffered by 470 Ohm ones ... exhibit the floating bus effect by design, but then that part ...ZX Spectrum rescued from a friend, has Issues.Hi guys, I've recovered this ZX spectrum 48K from a friend. It's a 1984 ISSUE 6A. He told me the last time it was turned on was about 30 years ago!.…
... still pulled up by 8.2k resistors and buffered by 470 Ohm ones ... exhibit the floating bus effect by design, but then that part ...Microdrive logic flow.Hi all, I've finally gotten my hands on an Interface 1 and Microdrive to continue my project, and have been analyzing the Microdrive with a logic …
... synchronize the data stream, followed by 8 1's ( 255 ) to mark ... lot of noise at around 8~10MHz, which needs to be ...pixel exact printingis there a way of doing this in basic? or by copying / modifying the rom code or using a completely new routine? so that print at x,x works more like…
... custom fonts.
Create 8 copies of font, each scrolled ... ). Each character must be followed by 8 empty spaces (byte 0).
New Game: A Yankee in Iraq (2017). A shoot-em-up.Last year, I [url="https://www.worldofspectrum.org/forums/discussion/53207/new-game-2016-revival-a-yankee-in-iraq-1992"]resurrected my old shoot-em-u…
... loader size has been reduced by 8 bytes
—The turbo loader ... has been slimmed down by another 6 bytes
Cost of Living CrisisThere's a cost of living crisis going on. Fuel, gas, food. fags, you name it, it's on the up. Wages and benefits stagnant. One needs a mortgage for a…
... amount of juice generated but multiply by that by what - 20 million buildings ...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…
... different. It needs the 8 bytes of graphics data ... of, it is incremented by 8 by the end of the routine ... code]
; de pointer to 8 bytes graphic data
; b ... /> sla b ; row = 8*row
sla b ; ... ld b, 8
.loop:
; blit 8 pixel row to ...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…
... different. It needs the 8 bytes of graphics data ... of, it is incremented by 8 by the end of the routine ... code]
; de pointer to 8 bytes graphic data
; b ... /> sla b ; row = 8*row
sla b ; ... ld b, 8
.loop:
; blit 8 pixel row to ..."8 CHANNELS" -ZX Spectrum BEEPER demoHi there. :) We finally managed to finish the BEEPER demo with 8-channels songs. You can get it from here: [url]http://pouet.net/prod.php?which=5…
... /> ___________________________________________________
THIS IS ?8 CHANNELS? 1-BIT MUSIC-COLLECTION ... />
THESE ARE 8 CHANNELS BEEPER TRACKS! :) ALL ... one because it gets 8 software channels from ... the drums now and multiply them by 6. ;) Only THEN ...ZX-7 instruction (BEEPER 8-channels editor)ZX7 was the most powerful ZX Spectrum 48K music editor end engine since 1988 to 2011 (when OCTODE appeared). [url]http://www.worldofspectrum.org/inf…
... id=0012538[/url]
8 sound channels on ZX48 was ... for one song now and multiply them by 6. ;) That means ... to fit in 48K RAM 8 (eight!) of my ZX7 ... songs, in the demo "8 CHANNELS" [url]http://pouet. ... of Wisdom" (a game by Rafal Miazga) [url]http://mister_beep ...Z80 AssemblerSome of you may know that I'm working on a Z80 assembler. I thought I'd start a thread so I can see what people think and what they might want to see…
... /> Where @ is a symbol for 8 bit values. Bytes are then ... new operations by combinations of opcodes strung together and multiply defined variables ...Which is better? Knightlore or Alien 8ok mates, by the years i tend to say the best games in zx history was knightlore but i've been playin' alien 8 a lot and i'm divided Is knightlore be…
ok mates, by the years i tend to say the best games in zx history was knightlore but i've been playin' alien 8 a lot and i'm divided Is knightlore best for being the first? or well-programmed alien 8?
I can't decide for myselfGSO Issue 8: Free PDF magGamestyle's Offline Magazine Tipped For Success August 29, 2004 Gamestyle Offline 8: The Retro Issue, the latest installment of Gamestyles highly r…
... , 2004
Gamestyle Offline 8: The Retro Issue, the latest ... late 24th August, Gamestyle Offline 8: The Retro Issue has already ... a look at Gamestyle Offline 8.
Link to the ... />
[ This Message was edited by: Swainy on 2004-08-29 ...
