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Help needed with calculating screen addressesCan anyone help me finally crack Jonathan Cauldwell's screen addressing calculator and, more to the point, is the reason I'm struggling because this …
... ; 64 * 256 = 16384 = start of screen display.
ld d,a ... 31 ; squares 0 - 31 across screen.
add a,e ; add ... e,a ; de = address of screen.
ret
< ... -
New loading screen for Bubble BobbleFinally, after a long time without knowing what to do, graphically talking, I managed to develop a new loading screen for this Taito coin-op conversi…
... to develop a new loading screen for this Taito coin-op ... -
byte to screen eventI have another question regarding assembly routine in MMCOYZXS by Toni Baker page's 87-88 [QUOTE]21A440 LD HL,40A4 11083F LD DE,3F08 0608 LD B,08…
... @ 0x3Fxx are written to the screen location 0x4xA4 is not when ... ' registers that indirectly address the screen location are passed the 'A ... -
Double-Buffer ScreenFor my Alien Breed Speccy re-write I decided to use a Double Buffer (DB) or 'Back Screen' to draw all the game action onto, before shuffling the whol…
... Buffer (DB) or 'Back Screen' to draw all the game ... lot onto the main display screen. This allows me to ... br />
The DB screen sits at mem 25000d and ... bytes to the DB screen and then RANDOMIZE USR ... hl, 25000 ;Start of DB Screen
ld de, 16384 ... -
Why was the Speccy screen displaced?Okay, so maybe this has been discussed before but no idea what search terms to look for. I just watched a YouTube video of someone filiming himself …
... had totally forgotten: the displaced screen.
Don't know ... , but mine sure had the screen displaced to the left. In ... -
Something I made in Minecraft...So, this is what I do in my spare time these days (when I'm sure a lot of you will be screaming for me to come back to Speccy-land; I assure you I wi…
... /minecraft_zx80_full.jpg][b]LOAD "ZX80" SCREEN$[/b][/url]
Actually ... with the TV output, power input, and the RAM pack expansion ... fuzziness of an old TV screen... -
Spectrum screen layoutSeeing the thread on displacement I was wondering why the spectrum had the stupid screen split into three sections and the addresses for each section…
... the spectrum had the stupid screen split into three sections and ... 't they just address the screen from top to bottom. -
DIM and FOR, NEXT loopHi there. I'm making a program with 100 items on screen using dim and a for next loop. The thing is, each time I want to manipulate the items I do an…
... program with 100 items on screen using dim and a for ... (g)=0 then gosub 9998: print at e(g),f(g ... -
48K: Half of copyright message in the middle of the screen?!Issue two. Has 74LS08 over the Z80, but the ULA is 5C112E-3 (I think this should be a 5C102E??? - I have one, but I'm not sure if it is working, at l…
... in the middle of the screen "1982 Sincla" and that's ... -
3D Games in SpecBAS!Not really :) Actually, yes - here's a type-in for you: MontyMole's "Crap Castle Master" [code] ZXASCII AUTO -1 PROG CrapCastleMaster 1 REM Crap Ca…
... : GO SUB 7000
40 PRINT AT 19,0;"(Press Any ... -
test screencan someone help? iv got a spectrum 128k +2 B i found in the attic form whenn i was a kid. it powers up only it starts on the test screen with out me…
... it starts on the test screen with out me starting it ... -
128K shadow screen?Hi How does the shadow screen feature work , and how can it be used?
Hi
How does the shadow screen feature work , and how can it be used? -
UDG tricks?I always enjoyed using [URL="http://www.worldofspectrum.org/ZXBasicManual/zxmanchap14.html"]UDGs [/URL]for the 'sprites' in my games, when I coded th…
... />
Trick 1:
[B]print chr$ 144 [/B] [I]This ... UDG 'A'[/I]
[B]print chr$ 145 [/B] [I] This ... grabbing a portion of the screen?
Are there any ... -
Fast and easy read/write of attributes?What are the fastest or easiest ways to check the attributes of tiles on the screen, in BASIC? It seems to be a great way of storing object info. …
... attributes of tiles on the screen, in BASIC? It seems to ... to apply attributes to the screen?
Is it possible to ... be faster than doing a PRINT AT command. -
displaying all memory activity in a screenDunno why I keep thinking about this, but here goes Is it easy enough to add a screen to an emulator that shows every memory address' activity.... …
... easy enough to add a screen to an emulator that shows ... leaves plenty of space on screen for thr emulator and game -
Bastris 2Following on from [url=http://www.worldofspectrum.org/forums/showthread.php?t=47706]this thread[/url] I've lashed together a new version of Bastris -…
... version should have working keyboard input on all speccies, and runs ... still has the crap title-screen music, by the way :D ... -
Help please converting loading screen in to a .tap file for recordingI have a Spectrum loading screen that I require to be loaded in to an emulator so that you can see it loading in (Paper 0, Ink7) and have that loadin…
I have a Spectrum loading screen that I require to be ... -
How to add a loading screen to my tap file[FONT=Calibri][SIZE=3]I?ve got my game created as a tap file generated by Pasmo. I now want to add a loading screen. Can anyone explaine the best way…
[FONT=Calibri][SIZE=3]I?ve got my game created as a tap file generated by Pasmo. I now want to add a loading screen. Can anyone explaine the best way to go about doing this so I can create a new tap file with the loading screen?[/SIZE][/FONT] -
Made In Creative UK - Loading screen.I'm a UK developer, and so support Made In Creative UK [URL="http://madeincreativeuk.com/"]http://madeincreativeuk.com/[/URL] My ZX81 games now incl…
... one half of a loading screen, so at most 12 or ... -
Two player, split screen Speccy gamesWhat are you favs? I'm referring to the type of games where you and a friend shared a Speccy keyboard with the corresponding game play split on the…
What are you favs?
I'm referring to the type of games where you and a friend shared a Speccy keyboard with the corresponding game play split on the screen.
Dog fighting in Top Gun was great fun. -
Bypassing bits of faulty ULAs: the LOAD!Hi everybody, Recently I had a sick Spectrum sent to me. The symptoms were that the machine would run fine, except that it wouldn't load. The border…
... the IOREQ. Next came the input - pin 28 of the ... ULA went to the input (pin 2). Then the ... as soon as the tape input started, it was remaining ... aborting (you know how the screen goes if it gets a ... easily, I connected the buffer input line directly to the tape ... -
Manic Miner loading screen adjustmentHad half an hour spare earlier and wanted to try a few things. Always like to learn anyways even now. [URL="http://www.yellowspider.co.uk/speccy/Man…
... .tap"]Manic Miner New Loading Screen$[/URL] , .tap file so right ... the top third of the screen.
The most annoying ... to fix it in the screen$. -
Why don't some games take advantage of the full screen?Putting the game play into a smaller box does it improve the speed of the game? I noticed a lot of games especially arcade conversions that a lot of…
... that a lot of the screen was used as the scoreboard ... used a third of the screen as the actual gamescreen. But ... of nearly all of the screen and the speed seemed to ... -
PENTAGRAM loading screenHello again, here is my attempt at an alternative loading screen for Pentagram. [IMG]https://dl.dropboxusercontent.com/u/61658082/PENTAGRAM%201.bm…
Seriously weird Issue 2 issue... (RAM-related)Hi guys; I have been trying to fix up my Issue 2 and have run across a bizarre issue that I haven't seen elsewhere in the forums. Hopefully one of …
... 48k
Initial problem: Yellow screen, only sees 16k.
< ... :
MEMCHK = PRINT PEEK 23732 + PEEK 23733*256 ... /> UPRAM85 = POKE 32768,85 : PRINT PEEK 32768
UPRAM170 = POKE ... 32768,170 : PRINT PEEK 32768
Actions ...Pentac does not have loading screenThis game: [url]http://www.worldofspectrum.org/infoseekid.cgi?id=0003655[/url] does not use loading screen, the one now in the entry is just the sc…
This game:
[url]http://www.worldofspectrum.org/infoseekid.cgi?id=0003655[/url]
does not use loading screen, the one now in the entry is just the screen after the game has loaded.Why no PLOT, etc. on bottom two lines?I was pondering if there was any way to get PLOT, etc. to address the full screen from BASIC without having to write a few lines of assembler to bypa…
... , etc. to address the full screen from BASIC without having to ... work across the full screen area? Then again, SCREEN$ can address all ... 24 lines (0-23), so why restrict PRINT ...PLOTTER - display file utilityI've been disassembling Gyron and needed something to help with working out where things were being put on the screen, so I wrote this program. I was…
... , and the program will
print both coordinate & address forms ... & hex and show the screen
area which they affect ... instructions, it addresses the whole screen as one homogeneous area, with ... a keypress. (I can't print a message anywhere at this ...Decimal to Binary stringHi all, Anyone got a less labour intensive BASIC routine than this? Example:- take 170 and convert to a string "10101010" take 4 and convert to a s…
... - Binary string conversion, A=decimal input, s$ is the output
1035 PRINT AT 21,0;"PLEASE WAIT ... s$ = "0000000" + s$
1099 PRINT AT 21,0;" "
1100 ...
