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Using ATTR detection in machine codeIs there a ROM routine that can be called that reads the ATTR value of a co-ordinate?
Is there a ROM routine that can be called that reads the ATTR value of a co-ordinate? -
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…
... me the address of an ATTR cell placed somewhere else (like ... -
Jetset Willy ATTR Buffer 2Does anyone understand how Jetset Willy uses the system vars area as screen ATTR buffer 2? H5C00 D23552. Thanks
Does anyone understand how Jetset Willy uses the system vars area as screen ATTR buffer 2?
H5C00 D23552.
Thanks -
Calculating the address of a pixel?Hi Folks, Is there an easy/quick way of calculating the memory address of a pixel? So for example, if I wanted to "plot" pixel at screen coordinate…
... by means of a simple calculation realised in hardware, then changing ... a 'simple calculation' in hardware is that two bytes (screen + attr) must ... -
Calculating the address of a pixel?Hi Folks, Is there an easy/quick way of calculating the memory address of a pixel? So for example, if I wanted to "plot" pixel at screen coordinate…
... by means of a simple calculation realised in hardware, then ... 'simple calculation' in hardware is that two bytes (screen + attr) must ... [code]
ROW HEX RASTER/ATTR BIN RASTER/ATTRIBUTE
1 ... need it
- address calculation is very simple for both ... -
BIN2BAS (load BASIC text into emulator) utilityI've nearly finished testing this. It allows a BASIC program to be loaded from a text file in any emulator which has a "load binary" option. I was wo…
... it now uses the same calculation as the 128k versions for ... d
30 LET a=ATTR (b,c): POKE 12345,BIN ... -
Snowfall effectHow do you go about creating a snowfall effect like the one in Yeti? Now don't laugh, I'm currently printing 32 UDG's of dots OVER the top of my gam…
... /> call drawblocks ;just some attr blocks to show it works ... ,
rlca ; net calculation: multiply by 4.
... ld l,a ; vertical coordinate calculation done.
; Add the ... routine to paint some attr blocks
ld ... -
Snowfall effectHow do you go about creating a snowfall effect like the one in Yeti? Now don't laugh, I'm currently printing 32 UDG's of dots OVER the top of my gam…
... block map? Or on screen ATTR detection?
... ;
call drawblocks ;just some attr blocks to show it works ... ld l,a ; vertical coordinate calculation done.
; Add the ... quick routine to paint some attr blocks
ld hl ... -
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 ... , and making for simpler address calculation for relative offsets. About the ... -
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 ... , and making for simpler address calculation for relative offsets. About the ... -
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…
... the value of the first attr byte. The reasoning for moving ... having to think about a calculation... -
How do i learn to programAll the years i had a computer the only one i could program was the Texas Instruments Ti99/4a and when using extended basic with its so simple sprite…
... well all this peek and attr to detect what was where ... -
BASin Release 6 available for DownloadHi all - It's another cut'n'paste from CSS :) I've been tapping away again, and seeing as a couple of people have recently seen BASin's latest bits…
... expression (including such stuff as ATTR). Any that require a string ... -
New (?) auto-hacking methodFollowing a discussion with BadBeard on another thread, I think it would be appropriate for me to share something with the rest of the world (i.e. th…
... /> POKE 26496, 201 => No ATTR update (looks weird)
POKE ... -
Sinclair Basic compiler for PC?I know we all can use BASin to play for a while in a little window. But... What about creating a 80x86 EXE program from scratch using Sinclair Basic…
... Sinclair Basic? You know, the ATTR(), LET, SCREEN$, CODE, A$(x ... -
WYE Compiler Infoi wonder that nobody knows about this masterpiece... for example games BLUE THUNDER or some of AUTOMATA games were compiled by this tool... it is lim…
... for basic like sprites and attr manipulations..
simple benchmark ... -
ScanlinesHere's an excerpt from the FAQ: [quote] Now for the timings of each line itself: define a screen line to start with 256 screen pixels, then border, …
... two: a screen and an ATTR byte). The border is 48 ... -
Techy Z80 questions****** Question 1 ****** Take the instruction SET b, (HL). This is broken down (in machine cycles) as follows (according to Microprocessor Technolo…
... ) [this seems to be the calculation of the final memory address ... 5T for the final address calculation (the Internal Operation). All these ... -
Need help with my P flag!Not sure if I've emulated the P flag correctly when its comes to overflows. Here's what I've done: LD A,123 LD B,16 ADD A,B Twos Complement of 123 …
... then I've assumed the calculation is -126 minus 130 (as ... -
Er, a MILLION different ways?!?!In the UK recently, there have been adverts for a media player (I forget which) whose manufacturer is encouraging purchasers to use it in shuffle mod…
... ; and instead of the correct calculation (2^8=256 is the ... -
Map to screen address problemCan anyone help me out with what I guess is a screen address calculation problem. I need to calculate the screen address of a tile based on a number…
... guess is a screen address calculation problem.
I need ... -
Fastest way to write something to screen$Hi, I just got pasmo.exe and start playing with attr scrolling, well, not scrolling, just write different values to a block and see if I can introdu…
... .exe and start playing with attr scrolling, well, not scrolling, just ... -
Turbo baud rates, pulses length for +50%(2250)?I need the 0-bit and 1-bit pulse lengths for 2250 baud rate. Also, a table with pulse lengths for upto +100% (and beyond) would be very useful to me…
... /> Or is there a simple calculation formula?
Thanks
BASin release 12c available for downloadHi again, folks - I've had no more reports of further bugs in BASin, so I'm assuming that we've now got a stable editor. Release 12c is now availab…
... displayed "X, Y" for the ATTR function, where it should have ...BASin release 12c available for downloadHi again, folks - I've had no more reports of further bugs in BASin, so I'm assuming that we've now got a stable editor. Release 12c is now availab…
... displayed "X, Y" for the ATTR function, where it should have ...Amazing Short Type-InsHey all ! Been having some pretty stressfull days lately so I tought I would type in some games. There was a very nice type-in book here in Slovenia…
Hey all !
Been having some pretty stressfull days lately so I tought I would type in some games. There was a very nice type-in book here in Slovenia called "Mirko Tipka na Radirko" which is roughly translated as "Mirko types on rubber" ( ...RFC: 64 column font codeIn BASIC, type CLEAR 49999 then import the code at 50000. Then type RANDOMIZE USR 50000. This will create a new channel and attach stream #4 to it. A…
... the carry flag before
; calculation
sbc hl,de ; the ...Fuse - Is there something wrong with my build?Just built Fuse this morning under 64-bit SUSE Linux 10, x86_64 architecture. It seems to work fine with most of my favorite games. (Manic Miner, Sp…
... with horizontal bands of flashing ATTR blocks
"fuse BlizzardPass ...New oneliners for 2008[INDENT][INDENT][INDENT]Here's my attempt at a first-person-perspective 3d game in one line of BASIC. It's called 'wormhole', and you've got to get t…
... to combine it with the ATTR reads. It's comfortably under ...
