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ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…
... . I will also be adding byte- and word-circular buffer. To ... functions for computing screen and attribute addresses as well as for ... later a 256x192 pixel, 32x192 attribute version that will also be ... -
ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…
... would typically be a single-byte "RST n" instruction that ... read a subroutine address of byte*256+byte. Since the peripheral id ... br /> ; d4ff - d4ff SP1.LIB attribute buffer
; d4f7 - d4fe SP1 ... z80 will always read byte*256+byte as the address of ... -
Background image with SP1 and Z88DKWhat is the prefered way to place an entire (or very large) image in the background when using SP1? Should I convert it to a long (32*24=768 ) list o…
... ), you can quickly copy the attribute data into the struct_sp1_updates with ... 768 bytes of the 6912-byte screen$ for whatever (maybe add ... -
ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…
... a colour (a standard Spectrum attribute).
sp1_PutTilesInv() ... the array containing an attribute value and a tile ... a standard joystick status byte that indicates which directions/ ... The standard joystick status byte is returned by all the ... -
The 128 plus 2 wasn't very goodHaving looked at the review in issue 33 of Crash of the Spectrum Plus 2, it strikes me as a bit odd, as if Simon Goodwin had to like it. I remember r…
... . The Timex 256x192 pixel, 32x192 attribute mode
4. The Timex ... (there was a < 100 byte utility to do this published ... -
The 128 plus 2 wasn't very goodHaving looked at the review in issue 33 of Crash of the Spectrum Plus 2, it strikes me as a bit odd, as if Simon Goodwin had to like it. I remember r…
... . The Timex 256x192 pixel, 32x192 attribute mode
4. The Timex ... (there was a < 100 byte utility to do this published ... -
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…
... block share the same lower byte of address. Moreover, they ... share the same lower byte with block's attribute address (colours).
byte, and two HI bytes for bitmap/attribute) instead of ... followed by two bytes of attribute address).
Now, ... -
tips on optimizing assemblyI wrote a small routine to rotate right a whole screen character line complete with attributes. This is my third ever assembly routine, so I guess i…
... /> ld a,(de) ; get first byte in pixel row
ldd ... (hl),a ; write first byte into last byte of pixel row
attribute address
;or $07 ; this ... -
Timex Sinclair 2068Hi guys. This is my first post here, the first of many, I hope.. :) I have a Timex Sinclair 2068 but don?t know much about it. It was given as a gif…
... buffer sizes: the 6912 byte one for spectrum compatibility and ... the 12288 byte one for the higher ... fit the 256x192 pixel 32x192 attribute mode (similar to MSX1 screen ... clash because each vertical pixel byte can contain its own ... -
ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…
... a single-byte background udg and a single-byte attribute identifier. When ... from a table of attribute addresses using the attr ... thinking again in terms of attribute identifiers being used in ... attribute mask to actually use. The first method with attr byte ... -
Noob to Z80 needing +3 helpI'm quite new to z80 programming, but i'm attempting to write some kind of windowing system that will run alongside BASIC on my +3 with Kempston mous…
... />
[code]
defb === put byte(s) here
defw === put ... ), how can you get an attribute address for a specific pixel ... -
Chunky GraphicsI'm mucking about with chunky graphics at the mo and am wondering if it's quicker to just use the attribute's rather than the actual solid graphic bl…
Attribute blocks are going to be ... the attribute memory is linear, and so the calculation of which byte ... -
Cybernoid editorSo, my long tern goal is to make my own Cybernoid or Rex like game (see an ancient thread about Sprite advice)...but my skills are somewhat lacking..…
... routine just check for the attribute colour - e.g. It looks ... table below shows 1st byte tile, 2nd byte top left of tile ... , 3rd byte top right, 4th byte bottom left, 5th byte bottom right ... -
TommyGun 0.9.x updates** Should be available via the utilities page soon! Please be patient :-) ** I'll be posting all future updates in this thread, instead of creating …
... /no checkbox)
( ) attribute only (no mask) (radio button ... /> [/code]
If attribute masking is selected then (attr_mask ... figure an 8-bit byte showing the ink/paper/bright ... corresponding bits in the attr byte written.
... -
My little first set of routines.Hi all, I just coded a little set of routines just to draw a screen on video mem and a fade out. I could have just copied the screen rendering rout…
...
; Out: A->Attribute with Faded Paper
;---------------------------------------------------------------;
attribute
or b ;insert ... encoded as the 2-byte opcode versions taking 8 ... -
Reason for strange display layout?I have always wondered if there is any technical reason behind the strange layout of the display file or why did Sinclair choose to do it this way?
... -7)
CCCCC = horizontal char / byte (0-31)
[/code]
attribute square, if you see what ... -
Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... ,CC
// \x14\xAA set attribute to AA
// \x01 set ... and set colour to attr byte
void cls(uchar ... -
Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
...
// \x14\xAA set attribute to AA
// \x01 ... code for each recognized command byte. For the 0x16 case ... string following the command byte sequence just interpretted. The ... display layout has each byte in a character square ... -
Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…
... execute [I]before[/I] the byte fetches begin (we've 2 ... be held until after the byte fetches because there won't ... that, though, as the last attribute fetch is not contended. This ... -
How could you hear if loading BASIC or MC?When loading a Spectrum program from tape you could usually hear from the sound if it is a BASIC or is some machine code program *. My question is, w…
... statistical distribution of bytes. The attribute area will tend to have ... where bit 7 of the byte is always 0 doesn't ... -
another c64 vs. Speccy site...[url]http://c64vsspectrum.com/[/url] 25 years and we are still brawling.. ;)
... from two 1,000 byte blocks of attribute RAM (one can be ... ,000 of colour with an attribute system and again any two ... -
Development IDE collaborationI was wondering if other people making development IDE's (MetalBrain, LCD , Claus Jahn and Carlinski as far as I know) would be interested in combini…
... bytes aren't consecutive - each byte is 256 apart for fast ... as for splATTR I needed attribute data without pixel-data. And ... -
Z88DK fun and gamesHi, I was wondering if anyone here uses Z88DK with TommyGun and knew about how to link the two together (e.g. how do I use a screen, sprite or map e…
... lacks the vibrating lego brick attribute clash from hell I've ... a variable holding a two-byte value. With the "extern char ... "spectrum.h". Check out the attribute related functions in the wiki ... -
help sought with first foray into machine code - pixel scrolldownI have started to code my first machine code program, a simple roadrace game. I've based it around the pixel scrolldown routine in 40 Best Machine Co…
... file and the first byte of the attribute file. Why not $57ff ... -
help sought with first foray into machine code - pixel scrolldownI have started to code my first machine code program, a simple roadrace game. I've based it around the pixel scrolldown routine in 40 Best Machine Co…
... copy operation will start at byte 4 (14 bytes less ... file and the first byte of the attribute file. Why not ... pointing at the first byte inside the stack so ... the pop first reads the byte there and then increments ... should point at one byte past the end of the ... -
ANN: SpecEmu 2.7Go get it kids! [url]http://homepage.ntlworld.com/mark.woodmass/specemu.html[/url] :p
... where the 'eck a particular byte is located on the screen ... /> Shows you the screen address, attribute address etc.. as pointed to ... -
alternate BASIC ROMI've come up with a few patches to the standard ROM to make it use the 128 shadow screen by default. The ROM is reorganised as follows: RAMTOP is se…
... the high-byte is set, particuarly when addressing the attribute area, so ... -
Changing the way SCREEN$ is loadedThe way the speccy loads in a SCREEN$ is interesting - top two-thirds first, then middle and finally the bottom, which is due to the way the speccy d…
... colour
inc hl ; next attribute
inc bc ; next ... (drawline+1) ; get screen poke byte
xor 255 ; inverse
byte counter
drawline: ld a ... , (screenaddress+1) ; get lo-byte of screen address
add ... -
Retro-X Alpha availableChanges from WIP 7 (Alpha 3) to Alpha 4 ( 1.5.08 - 14.5.08 ). Requested by and help by - in brackets. Bugfixes: * Viewer: o File list not displaye…
... ]
Importer says 'Needs 6912 Byte' instead of 'Bytes"
[/QUOTE ... -wise, as the objects are byte-oriented. Especialy colour tiles can ... only if you choose in Attribute settings the "Intelligent Bright", otherwise ... -
Watching screen while debugging???I'll try to state my problem clearly, but I don't know if I'll succeed ..:) I load a Spectrum program into emulator (it doesn't matter which one at …
... point your pointer(!) to the byte in question on the screen ... tell you the screen and attribute addy, colours contained therein, my ...
