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Which Windows Emulator will support SPECTRA?I want to start crossdeveloping games for SPECTRA, but it is a pain in the ass to save the TAP on USB Stick or SD Card and test them on my eMac SP Em…
[QUOTE=LCD;749109]Yes, yes yes!!! Please.[/QUOTE]
I'll dig them out tomorrow night and post them up.
[QUOTE=LCD;749109]You probably saw my bitshifting routine to calculate attribute address from its X and Y coordinates, like:
[CODE ... -
Pentagon floating bus timingI wanted to take a little break from working on the ZXDS UI yesterday, so I added support for Pentagon timing instead, so I can finally enjoy the lik…
... , interleaved, i.e. raster, attr, raster, attr), which are saved into a ... and one read of an attr byte per 4 t-states ... , making both the value for the CPU and value for the display ... always the last value read returned? Does the value become 0xFF at ... -
Dock's ZX Maze gameI'm hoping to finish a simple maze game in ZX Spectrum BASIC this week, as part of the Ludumdare Retro challenge. I used to dabble in speccy basic on…
... ]I'm happy to use ATTR for the lookup, but I ... them to be changed by value or area
[center][img ... -
ZX-Paintbrush 2.3 publishedDear readers, Today, I published version 2.3 of ZX-Paintbrush. Inspirated by kgmcneil, I decided to follow his ideas and implemented a switchable p…
... , but this device applies its value to both X & Y ... it is in (Pixel&Attr, Pixel_Only, Attr_Only, Off)... This would ... -
ZX-Paintbrush 2.3 publishedDear readers, Today, I published version 2.3 of ZX-Paintbrush. Inspirated by kgmcneil, I decided to follow his ideas and implemented a switchable p…
... , but this device applies its value to both X & Y ... it is in (Pixel&Attr, Pixel_Only, Attr_Only, Off)... This would ... -
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…
... of the stick - that SCREEN$ value can be read upto 255 ... :
And the same for ATTR. Am I missing the point ... -
Better arrangement for video memory?While doing some documentation work for the ZX-Uno project, I compared the advantages of the weird layout of the ZX Spectrum against a linear layout.…
... is shared among bitmap and attr address) being the last 7 ... possible values (because for every value of Y coordinate, the X ... significant bits with the same value as the bitmap address, that ... -
Russian Pascal CompilerHello,<div><br></div><div>Unfortunately I started a discussion (as OutBush) on the Temporary Forum Board not knowing how long it would be until the W…
... )Border(color)Color(attr) - set a current attributes, attr=attribute byteScreenThaw - gradual ... - variable name (byte type) for value of found elements;- MapVarX,MapVarY ... -
SpecBAS 0.844 releasedHi all - it's been a while... Having some unexpected extra time off work, I've been able to get some work done on SpecBAS and it's now a bit more …
... be coloured. No BORDER. No ATTR function due to the above ... they need POKE bankID,address,value and PEEK bankID,address. Banks ... -
Peeking the contents on screen? How?You will have to forgive me for growing up on the C64, but I know I can peek the location of a character (1024 is top left from memory) and the peek …
... in different colours then use ATTR(y,x) to retrieve the ... +(y*32)).
It's value is the INK plus 8 ... -
Peeking the contents on screen? How?You will have to forgive me for growing up on the C64, but I know I can peek the location of a character (1024 is top left from memory) and the peek …
... in different colours then use ATTR(y,x) to retrieve the ... +(y*32)).
It's value is the INK plus 8 ... -
Peeking the contents on screen? How?You will have to forgive me for growing up on the C64, but I know I can peek the location of a character (1024 is top left from memory) and the peek …
... in different colours then use ATTR(y,x) to retrieve ... it's faster because the ATTR function is very short:< ... br />
[code]
;; S-ATTR-S
L2580: CALL L2307 ... in C as an intermediate value.
AND $E0 ; ... -
Trying to remedy a bug in this gameStruggling with this project, the character shifts the crates around no bother but kills baddies that are one space to the left or right even though …
... (hl)
dec (hl) ;decrease value
ld a,254 ... ;block move
call attr ;check attr of new square ; -
Welcome to the Matrix!Ok here's something I been playing with while I'm at work and on public transport. I'm thinking I want to be able to move the large letters around th…
... the attributes to a previous value easily cause I don't ... ]
Use the function ATTR(Y,X) to read the ... -
how to edit a romhi, i just wanted to know the best way to edit a rom. im going to do it in an emulator first and then run it in a spectrum.
...
Where the value is in standard ATTR format, except that bits ... -
ZXSCLZF - Yet another Screen CompressorQuick disclaimer before I continue, this compressor does not shrink screens as small as some of the others posted here, in particular the very good z…
... way address conversion 'screen->attr->screen', likely shrinking the ... be stored as an absolute value in the data, as it ... -
ZXSCLZF - Yet another Screen CompressorQuick disclaimer before I continue, this compressor does not shrink screens as small as some of the others posted here, in particular the very good z…
... way address conversion 'screen->attr->screen', likely shrinking the ... be stored as an absolute value in the data, as it ... -
Interrupts, 16k Spectrums and snowI'm writing something for the 16k Spectrum and I want to use interrupts. The avilable documentation doesn't seem clear enough for me to figure out ho…
... the whole of the bottom attr row to BLACK+BLACK+BRIGHT ... also blank out the top attr row (just BLACK+BLACK) to ... attributes as markers if the value of either ink or paper ... -
Need help from people with a +2A/+3Started a topic [url="https://www.worldofspectrum.org/forums/discussion/55141/need-help-from-people-with-a-2a-3"]here[/url] to get a broader reach, b…
... ]
ld de,$710f ;ATTR color 71h into D
cp d ;[4]test for ATTR color
jp nz,1 ... /> cp d ;[4]test for ATTR color
jp nz,1 ... if it reads the same value both times. Technically, it should ... -
Need help from people with a +2A/+3Started a topic [url="https://www.worldofspectrum.org/forums/discussion/55141/need-help-from-people-with-a-2a-3"]here[/url] to get a broader reach, b…
... the sides) that return the value of the rightmost attribute on ... the line. Expecting this value to be returned two or ... some other combination such as attr+bmp or 2x bmp.
Hacking the ZX Spectrum 48K ROMHi Guys, I have modded my Speccy with a dual boot ROM loading on first bank the original ZX kernel and on the second bank an enhanced version. I h…
... you can see, the ATTR-T, ATTR-P and BORDER variables are ... all initialised to the same value ... . Since only bits 3-5 of BORDER are relevant; and ATTR ... -T and ATTR-P use the standard ...Hacking the ZX Spectrum 48K ROMHi Guys, I have modded my Speccy with a dual boot ROM loading on first bank the original ZX kernel and on the second bank an enhanced version. I h…
... understand each colour has a value ranging from $01($00?) to ... /> For the BORDER, P-ATTR and T-ATTR system variables; the flash ...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…
... 58a0 ;initial addr (uses attr area)
ld a ... /> ld a,(hl) ;value at address into A for ... br /> ld a,d ;convert attr addr into screen bitmap addr ... /> ld (de),a ;apply attr
ld a ... /> ld (de),a ;apply attr
jr printer
...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…
... )
ld a,(hl) ;value at address into A for ... /> push de ;save current screen attr addr
ld ...
pop de ;restore screen attr addr
char_attr1
ld (de),a ;apply attr
jp prop_printer
< ...PAPER&INK: screen/character differenciation?So I was looking at a type-in listing earlier and I got to wondering how the Spectrum differenciates between knowing that the PAPER/INK commands need…
... /> This will show the value of the first attr byte. The reasoning ...Maze Death Race - did it ever work?As a huge Rally-X fan I was always disappointed in MDR, but I cannot remember if that was just because it was a poor clone or if it was also because …
... the screen due to the ATTR trick. The way is yellow ... maze contains some not hidden ATTR (the programmer saved the maze ... ) x 130 (high) rectangle. The value 36 is the green field ...
