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Help with calculating screen addresses[SIZE=3][FONT=Calibri]I?m having a bit of a coding session whilst at work so can?t spend too much time on my current problem. I?m sure someone on thi…
... just inc or dec the screen address by one. Up and ... to cross one of the screen thirds. Assuming my cursor starts ... -
.z80 files load faster than .tap or .tzxHello again, I was wondering why the majority of games can be downloaded as .tap or .tzx but not as snapshots (.z80 or .sna). It takes about 5 minut…
... .tzx but not as snapshots (.z80 or .sna). It takes about ... -
SCREEN$ bug fixI've been using the SCREEN$() function recently for reading data off the screen rather than taking up space with an array and I got fed up with the s…
I've been using the SCREEN$() function recently for reading data ... off the screen rather than taking up space ... fix for it. Instead of SCREEN$(row,col) use FN c ... -
A FAQ from a Z80 datasheet may reveal some up-to-now unknown behavioursA fellow member of the zonadepruebas.com forum has just mailed this PDF to me. [url]http://www.atc.us.es/~rodriguj/zilog_z80_faq.zip[/url] It's an e…
... CMOS chip?
- Does the Z80 CMOS suffers from latch-up ... /> - What happens if a NMOS Z80 suffers a negative spike? (those ... -
+2A shows test screen and beepsNew day, new problem. A +2A, which seems to be in good condition, shows the colored test screen when powered-up and beeps about once every second. Am…
... condition, shows the colored test screen when powered-up and beeps ... -
z88dk and im2I set up a minimal IM2 mode so I can draw sprites for a laff [code] #include <string.h> #include <stdio.h> #include <im2.h> #include <stdlib.h> #in…
...
//copy backbuffer to screen
LDIR
< ... ");
im2_Init(0xd300); // place z80 in im2 mode with interrupt ...
//copy backbuffer to screen
LDIR
; ROM routine ... -
clang/llvm backend for Z80?Every so often I feel tempted to revisit assemblers/compilers etc. I had (for unrelated to Z80 reasons) the need to have a look at the clang compiler…
... had (for unrelated to Z80 reasons) the need to have ... anyone tried to make a Z80 backend for it"?
... to use it for Z80. I seem to remember ... the architectural limits of the Z80 (despite the GNU project ... putting out a pretty decent Z80 assembler). Now if z88dk ... -
Trying to use ZX Screen Snapper with Zero V0.5Great, another speccy problem... I'm using the Zero emulator and I'm using ZX Screen Sapper to take screen shots. Well, I would be using it, but Zero…
... I'm using ZX Screen Sapper to take screen shots.
Well ... the Emulator menu for the Screen Snapper, even though it says ... -
Zx Spectrum+ Issue 6 yellow screenHi boys, recently i found a zx spectrum+ issue 6 that just turned on displays a screen with too much yellow exactly as in the picture below: [IMG]ht…
... just turned on displays a screen with too much yellow exactly ... -
A new full-screen bicolor engine called NIRVANA[I]OK, there's something I need to clarify first: Nowadays if you write [B]"multicolor"[/B] everyone assumes it refers to "multicolor 8x1" (an attri…
... ]bicolor[/B] graphics everywhere* on screen.
In practice ... ]"btiles"[/B] anywhere on screen (even partially hidden outside ... />
[I]* Term "full-screen" is not exactly accurate. The ... ENGINE is also "full-screen". Technically, perhaps it would ... -
Ben Versteeg's November sales[COLOR="Blue"][B][SIZE="6"]Almost ready[/SIZE][/B][/COLOR] [IMG]http://benophetinternet.nl/hobby/vanmezelf/sales/line.jpg[/IMG] [IMG]http://benophet…
... .jpg[/IMG]
[B]Z80 3.5MHz[/B]
?6 ... must be made ready (with custom wishes).
Need anything else ... -
Clear the screen from assemblerI want to clear the screen before I draw my graphic elements on it. Speed is not important so I was thinking of using the rom CLS option if that is p…
I want to clear the screen before I draw my graphic elements on it. Speed is not important so I was thinking of using the rom CLS option if that is possible. Can anyone advise on how to call this command or some similar routine to clear the screen? -
Converting an integer arbitrary large binary number into a printable decimal formThis was asked a long ago at the comp.sys.sinclair newsgroup. At that time, I came up with a solution by extrapolating the classic algorithm of suces…
... but very slow process (the Z80 is even unable to divide ... gave it a try as Z80 machine code implementation, to see ...
call 1601h ;OPEN #2 (screen)
ld de,NBITS
Tricky ZX RepairHello guys, This time I put my hands on a very nice Issue 3 16K, upgraded to 48K. To bertter explain "nice", it is absolutely mint, not a scratch on…
... of the classic flashing tartan screen, it just didn't go ... first 1/3 of the screen still with vertical red lines ... bus. Logic levels on the Z80 seem correct. It does not ... real suspect can be the Z80 itself, even if everything checks ...Black Screen Spectrum 48kWas working ok, it came to me in a Fuller FDS keyboard, I had a nose inside and found a floating power lead connected to the keyboard, I removed that…
... the lines flash down the screen and it stops at the ... black screen....:(
Went through and ...Arnhem: Operation Market Garden projectJust had an idea. Bit naff, but it will keep me busy over Christmas holidays. Using Civ 4 beyond the sword, I am going to recreate Operation Market …
... .
Set up a custom game, always war, no cities ... of Civ 4 is black screen. Anyway?Custom Built PC questionsMy old stock Compaq Presario is showing signs of old age and i'm looking into getting a new faster PC this one i'm using is nearly 4 years old and to…
... or recommendations of a decent custom pc store.The alternative loading screen challengeSomething a little bit different. :-o Only eight this time. These are all well known speccy games however the screenshots of the loading screens are…
... not pick any where the screen was imo too wildly different ...Spectranet questionsI have received the wonderful Spectranet interface from RWAP today. I have started to experiment with it and I have found an interesting thing... So…
... a Zilog Z84C0006PEG NMOS/CMOS Z80 CPU because the desoldered original ... on the top of the screen and the % commands were not ...Calculating screen address to alternative ATTR area?I'm using this small snippet of code to convert a screen address to an attribute cell address... [CODE]AttrDE: ld a, d ; get the hig…
... of code to convert a screen address to an attribute cell ... ; get the high byte of screen address
rra ; divide h ...harvard architecture spectrum clone.I got my first +2 before christmas. I'd never given the 128k spectrums much thought, always been a 48k rubber key tradionalist. :smile: I've been me…
... .
I know the z80 isn't designed like this ... issue i think with the z80 but offset a little by ... .
pushing values to the screen display would no longer work ...Hunchback II loading screen by zombi2I'm about 3 years late (!), but found a new loading screen for Hunchback II by [URL="http://zxart.ee/eng/graphics/authors/z/zombi2/qid:2662/"]zombi2[…
... (!), but found a new loading screen for Hunchback II by [URL ...Bomb Munchies - preview releaseBomb Munchies Preview release Version 12th Jan 2014 [URL=http://s979.photobucket.com/user/MatGubbins/media/bmsix_zpsc33279a2.gif.html][IMG]http://i…
... />
* Kempston IN55 is a custom made interface.
** If ... their own corner of the screen and you must blast the ...Gamex loading screen auhtorI see that nobody else besides Jonathan is credited in the game, but the loading screen is very much in Tommy Pereira`s style, was it done by him? :)…
I see that nobody else besides Jonathan is credited in the game, but the loading screen is very much in Tommy Pereira`s style, was it done by him? :)
I also need this info to update the review of the game in my blog ;)Clearing 22 lines of the screenHow do I go about clearing the top 22 lines of the screen and leave the bottom #0 area untouched? I have a routine to reset the attributes, but cant…
... top 22 lines of the screen and leave the bottom #0 ...ULA snow effectIt's wintertime, you know. [quote="http://ramsoft.bbk.org.omegahg.com/floatingbus.html"]when the I register falls in the range 0x40-0x7F then the UL…
... memory refresh cycles of the Z80 (performed during each instruction fetch ... pattern is displayed on the screen.
In detail, the ... = the R register of the Z80
The ULA ... every other column of the screen
- Why the 'unaffected' columns ...POGO - loading troubles with DivIDEI am having troubles with loading POGO on my ZX Spectrum. I am using a 48k issue 3. With the DivIDE, the loading screen appears and after that the ga…
... /> With the DivIDE, the loading screen appears and after that the ... /> I turned it into a .z80, but again, no use.
Sinclair / z80 books (Zaks & Dale)As part of a continuing clear-out, I'm selling the following books, and will accept offers: The Sinclair Story - Rodney Dale (1st edition hardback, …
... condition)
Programming the Z80 - Rodnay Zaks (softback in well ...Are there any custom +3 DOS file systems?I'm looking to see if there are any custom +3 DOS disk file systems available rather than the 40 track, 9 sector, 512 bytes/sector (I think that is r…
... see if there are any custom +3 DOS disk file systems ...How to print logo onto screen at chosen coordinates?Hi, I've just got back into zx spectrum games after all these years and after seeing some of the great games on here I would like to start learning p…
... game title/name to the screen at chosen coordinates and a ...
