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[Asm] Is this nested loop faster than LDIR or a bunch of unrolled LDI's?Hi all. I'm learning Z80 asm on Speccy 48K, and to start with I decided to write my own "CLS" routine (without relying on ROM calls or LDIR) as a lea…
... ; Put the attributes fill byte on to the attributes address.
... Select the byte used to fill screen. All zeroes means blank ... ; Put the fill byte on to the screen address.
... ; Move back to the previous screen address.
djnz cls_screen_loop ... -
MultichromeIt turns out that multichrome, and other screen modes, are emulated in Fuse and Eightyone via ZX Spectrum SE emulation (which is similar to the TC214…
... border is being drawn, fill screen 0 with red attributes. (384 PUSHes - easily ... border is being drawn, fill screen 0 with blue attributes. Then switch screens ... to write to the attributes during the main screen area - just issue ... -
SCREEN$ 1.9e Released!And here's another update! [url]http://paul.dunn.googlepages.com/SCREEN_1.9e.rar[/url] There's a few new things in this release, but it's mostly bu…
... /> I had to change the screen resolution from 640x480 to my ... .
After the 2nd screen had loaded, I started getting ... (i.e. 3 in the attributes fill). I was using DirectDraw.
64x48 monochrome big pixels display ideaHi. I was playing with this idea of having a simple 64x48 bytes buffer, 1 byte per pixel, then a renderer which would take that buffer and render it…
... ld sp,nn ; start of screen "half-line"
push ... a linear buffer to store attributes, implemented as a " ... linear buffer and modifies attributes on screen every 4 pixel lines ... using shadow screen. It would work as follows: fill entire bitmap ...Help needed with MIA software with custom (?) loaderHi, I've got into my hands recently a bunch of Polish educational software which are unknown MIA on WOS. I believe they are protected with some…
... BC,1800
0x5CD9 LDIR ; Fill screen with random data from ROM ... -22527 0x5000-0x57FF 01010xxxxxxxxxxx
;Attributes goes from
;22528-23295 ... M2 if middle block or attributes
0xEB69 SCF ; Carry signals ...Graphics program in AssemblyHi so I think I'm getting the hang of this so I've done this program. It writes directly to the screen. I'm using ZX Spin. [code] LD HL,16384 LD B,…
... , if you really need to fill screen with one byte, use much ... , if you do not need attributes
ld (hl), 170 ...Graphics program in AssemblyHi so I think I'm getting the hang of this so I've done this program. It writes directly to the screen. I'm using ZX Spin. [code] LD HL,16384 LD B,…
... , if you really need to fill screen with one byte, use much ... , if you do not need attributes
ld (hl), 170 ...EmuZWin version 2.3 Final release. To be continued...This is the Final release of the version 2.3, but hope version 2.4 will be ready soon, with great new features added... Version 2.3 Release 1.99 (15…
... "Use DirectX in Fill-Screen", and going to full screen and back to ... in normal state (not full screen and not maximized).
[*] Reporting ...Please help me name that football manager gamei remember it was from around 1987 or 1988 It always unfolded as 4-3-3 tactics and Aston Villa are in the second division, you could not move a play…
... could never see a players attributes on screen, you had to send ...Byte-order backbufferThis is a tool for Z80 coders who wish the Spectrum screen had a serial layout. It runs as an interrupt mode 2 service routine and uses POP and PUSH …
... screen is drawn from the bottom up,
starting with the attributes ... )
org 63628
attributes:
incbin "screen.atr" ; 768 bytes of ... attributes
org 0xfff4
Making a mapI should learn Z80 assembly, but I don't have the time (really busy) and I feel like making a game. I've tried with Colt which gives me enough speed…
... the code which renders the screen:
[code]9000 PRINT ... way to print a character+attributes on screen?
(sry but ...Screen DisolveHas anyone got any good assembly code to dissolve the screen I could see
... /> org 32768
; Fill screen with pixels
LD ...Spectrum Screen Memory MapWhat's the advantage (mistery?) behind ULA's spectrum screen memory interpretation? 6144 bytes divided into 3 blocks, 2048 bytes long. if you want t…
... how and where to place attributes in screen memory. Probably not worth ...Spectrum Screen Memory MapWhat's the advantage (mistery?) behind ULA's spectrum screen memory interpretation? 6144 bytes divided into 3 blocks, 2048 bytes long. if you want t…
... how and where to place attributes in screen memory. Probably not worth ... wouldn't have our extra screen modes :-)Change PAPER and INK, but nothing else?Can you in BASIC change the colour attributes in the screen without changing what is already printed at that location? I.e. change the PAPER and INK,…
... AT 0,0;"P": REM Fill screen with text
20 PRINT ...MultichromeIt turns out that multichrome, and other screen modes, are emulated in Fuse and Eightyone via ZX Spectrum SE emulation (which is similar to the TC214…
... pixel bytes + 2x 6144 attributes. Complette screen length is 2x12288=24576 bytes ... videorams(with different pixels and attributes).
Zilog's DITHVIDE ...rebuilding a speccy - original hardware, emulation or cloneI have some spare speccy parts and cases etc and I've been thinking of bastardising a spectrum. I'm undecided as to using original hardware, clone or…
... /> There will still be attributes. The screen is still 6144 bytes of ... bitmap and 768 bytes of attributes ... up to 64 colours on screen, clash is pretty much optional ...Sinclairean A3[B]Sinclairean[/B], a new ZX Spectrum emulator written in machine code for x86-compatible, OpenGL-capable computers. Features: [LIST] [*]Fast machin…
New FILL screen fitting mode: a good compromise ... a real 4:3 Speccy screen and the native aspect of ...Gigascreen - programming guideDoes anyone know of a programming guide for the 128K gigascreen screen mode, specifically a persistence colours table, some code (pref. C level or BA…
...
;Clear screen 0, pixels and attributes:
LD HL,16384 ... 768-1 ;Count bytes for screen + attributes less 1
LDIR ... 768-1 ;Count bytes for screen + attributes less 1
LDIR ... ;HL = start of attributes on screen 1
LD A ...Attribute Challenge x30[b]1. [img]http://dl.dropbox.com/u/9498358/attrscr2/1.JPG[/img] 2. [img]http://dl.dropbox.com/u/9498358/attrscr2/2.JPG[/img] 3. [img]http://dl.drop…
Last screen... maybe Manic Miner? (just attributes, no screen info)Games featuring... relevant bugsThere was a recent improvement to the WoS database in order to classify [URL="http://www.worldofspectrum.org/forums/showthread.php?t=34261"]Games fea…
... to fix this. The screen has each distinct graphic character ... and one for its attributes. The screen picture is defined by ... located. (The reason the screen corruption varies on the different ...
PS.
The screen corruption could be avoided by ...BackgroundDoes anyone know how i would create a background similar to [URL=http://imageshack.us/photo/my-images/42/backgroundmockup.png/][IMG]http://img42.ima…
...
ld bc,767 ;fill whole screen with 96
ldir
fill screen routine like this!)BackgroundDoes anyone know how i would create a background similar to [URL=http://imageshack.us/photo/my-images/42/backgroundmockup.png/][IMG]http://img42.ima…
... good Doctor) could code a fill screen routine like this!)[/QUOTE]
Stuff the Speccy can do but we all thought it couldn'tHey all, Does anyone have any good examples of stuff the speccy can do - graphically, sonically, etc that we thought it wouldn't be able to do? Che…
... 81 animated tiles with 8x1 attributes on screen at the same time ...Byte-order backbufferThis is a tool for Z80 coders who wish the Spectrum screen had a serial layout. It runs as an interrupt mode 2 service routine and uses POP and PUSH …
... screen is drawn from the bottom up,
starting with the attributes ... )
org 63628
attributes:
incbin "screen.atr" ; 768 bytes of ... attributes
org 0xfff4
64x48 full colour graphicsHow feasible is this? Could an interrupt-driven routine be used to, for example, fill the top two thirds with a 64x32 blocky picture and leave the bo…
... br />
;; First we fill screen 0 with the pattern and ... br />
;; First we fill screen 1 with the pattern and ... bc
;; Show screen 0 for exactly 224x4 = 896 ... 896
;; Show screen 1 for exactly 224x4 = 896 ...64x48 full colour graphicsHow feasible is this? Could an interrupt-driven routine be used to, for example, fill the top two thirds with a 64x32 blocky picture and leave the bo…
... br />
;; First we fill screen 0 with the pattern and ...
;; First we fill screen 1 with the pattern and ... /> l1:
;; Show screen 0 for exactly 228x4 = 912 ... = 912
;; Show screen 1 for exactly 228x4 = 912 ...Mini scroll routineI'm looking for a routine that scrolls a small section of the screen downwards and replaces it with nothing, 2 x 2 charcter blocks to be precise, to …
... contents of B for different screen sizes.
... /> ld hl,0 ;fill screen with junk just so we ... do whole screen
ld hl,16384 ;fill the top ... way it looks the screen is being pulled down ... similar but uses a screen address table and manipulates ...New loading screen for Livingstone SupongoHi, I present you my new screen for this great game.:smile: This is the original loading screen: [IMG]https://dl.dropboxusercontent.com/u/2616449/L…
... the restrictions of the zx attributes, this screen is a minor miracle ...
