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Draft specs for TZX v1.20Hi all! In the attempt to restart the development of the TZX format, I've put online the first version of the draft document [1]. At the moment ther…
... specification. Block ID 0x14 specifies the pause parameter as a BYTE value ... -
Draft specs for TZX v1.20Hi all! In the attempt to restart the development of the TZX format, I've put online the first version of the draft document [1]. At the moment ther…
... would use 2 bits of block data. However, what would happen ... 0x11, i.e. the data byte 00011011 produces the sequence os ... post where I proposed this block for the first time, the ... -
Draft specs for TZX v1.20Hi all! In the attempt to restart the development of the TZX format, I've put online the first version of the draft document [1]. At the moment ther…
... :)
Since this block deals entirely with "Symbols" and ... the "Used bits in last byte" byte?
Does this ... in the last stored byte of the block, or does it indicate ... data block might look like:
[code]
| Byte1 || Byte 2 ... -
Draft specs for TZX v1.20Hi all! In the attempt to restart the development of the TZX format, I've put online the first version of the draft document [1]. At the moment ther…
... yet started to implement the block into RealSpec/RealX, that's ... used bits in the last byte would then be NN*8 ... -
Draft specs for TZX v1.20Hi all! In the attempt to restart the development of the TZX format, I've put online the first version of the draft document [1]. At the moment ther…
... about something like this:
Block ID 19:
------------
*block length
*general flags ... byte (other bits should be 0)
*pause after this block ... (ms)
*block data
Tap files - exact specsThe FAQ says... [quote] TAP Format The .tap files contain blocks of tape-saved data. All blocks start with two bytes specifying how many bytes will…
It's an XOR of all the previous bytes in the block (including the flag byte, IIRC).Emulator File types...SNA/TAP/TZX/Z80/ZXS All I knew about the Spectrum was how to play games on it, but since being introduced to pc emulations back in '97 I've always w…
... to load the next data block "from tape".
The special 2-byte "NOP" opcode was usually preceded ... to the emulator which data block to load. In total ... of loading the next data block from disk.
byte on sna -- this ...Method to read byte as binary string rather than dec?Hi all Am fiddling around with the screen buffer and have written a routine to scan the screenbuffer into upper ram and then write it back in upside…
... and know how the 1 byte stripes work in the 8x8 ... as the right egde of block A is no longer next ... to the left of block B.
[ This Message ...Running Man TZX incompleteThe Running Man TZX does not contain level data (side 2). This data is available on the Heroes compilation if it helps.
... on it! The final block has a parity value of $89, can ...Spectune (MIA) WAV->TZX problemI've just got the tape for Spectune (Xorsoft, 1983), which loads direct on a Spectrum or emulator OK, and from which I created a WAV which also loads…
... 't load; it fails on block 5, the same as the ... TZX, block 5 being the first of three 1-byte headerless blocks ...Unpublished spectrum gameHi there I have a Spectrum PDS development environment and before I get rid of my old PC which has an ISA slot I thought I should ask this question i…
... and select load memory block - load the memory block to 16384. Then ... 3 bytes and the last byte to get a pure binary ...Jupiter AceCan anyone point me in the direction of a utility that can convert Jupiter ACE .tap files back into .wav? Cheers, MikeW
... Spectrum uses a 19 byte header, the Ace uses ... a 27 byte header.
... missing either the first Sync byte (Same as the spectrum - ... 0xFF for data block), or the checksum byte at the end. ... adding the correct Sync Byte and checksum they work ...MEMPTR finally crackedThis post is mainly for emulator developers. As you may be well know there is a misterious internal register in Z80 CPU (MEMPTR) which value is set …
... ,DE instruction to test. The block instructions may also give values ... . When the top numbers low byte is #FF and the top ... numbers high byte is #x7 or #xF then ...z88dkHello. I'm an spanish user of spectrum (and naturaly of this page). I have a question. I want to start to program games with z88dk, but I need a goo…
... only):
- The 1-byte definition which is graphics only ... (no mask)
- The 2-byte definition which is made up ... separate z80asm compiles for each block. So, maybe the ability to ...ZXCF InterfaceI'm just trying to get an idea for the ZXCF interface, and to me, it looks a much cleaner design compared to divIDE (Of course, that's just my opinio…
... is 2 colours per 4x1 block (compared to the standard spectrum ... of 2 colours per 8x1 block). The video circuit drives an ... easily. Just interpret the two byte fetches done in the Timex ...Getting attribute location from a screen coordinates (x,y)I am having trouble figuring out how to convert an x,y coordinate pair (pointing to a specific pixel) to the location of the attribute for the block …
... CCCC (pixels)
BB = block (0-2) indicates top third ... line (0-7) within a block
CCCCC = horizontal character coordinate ... the pixel position within a byte. 0=leftmost pixel position (bit ...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…
... the sprites), BALLOC.LIB (block memory allocator), SPECTRUM (actually ... 1 // masked sprite 2-byte definition (mask,graph) pairs ... 2 // masked sprite 2-byte definition (mask,graph) pairs ... 1-byte or 2-byte graphical definitions. 1-byte means ...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…
... using BALLOC.LIB (the dynamic block memory allocator) to handle ... fragment sets up the dynamic block memory allocator (BALLOC.LIB). " ... /> Each memory block managed by BALLOC needs a hidden byte to identify ... . This way when the block is returned for reuse by ...Linux WAV to TZX convertorsI looked through the posts and seen a few threads about converting WAVs to tzx but none of them are working for me. I have a few old tapes that don't…
...
---------------------
The byte sequence you found is a ... , 32 , 32 ,)
lenght data block: 4933 (69,19)
start ...Linux WAV to TZX convertorsI looked through the posts and seen a few threads about converting WAVs to tzx but none of them are working for me. I have a few old tapes that don't…
... file.
I have displayed byte sequences of TZX/TAP files ... need to more work on block identification and timing, etc, but ...Sprite adviceHello. So, I'm slowly getting to grips with Z80 assembly - currently equal parts frustration and enjoyment. Now looking for some advice to help shift…
... a, l ; no, get lower byte of address 1M 4T
block 2M 7T
ld l ... need to adjust high order byte of address 1M 4T
Checksum RoutinesHi there everybody, Does anyone have an 'off the shelf' assembler routine for generating checksums? Thanks Jim
... DE) for an address block pointed to by HL ... hl) ; Add first byte of checksum to byte.
ld ( ... Move to the next byte of checksum.
ld ... Move to the most significant byte.
ld a,(hl) ...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 ... }/include/balloc.h is the block memory allocator, which has already ... size of the decompressed data block determines the degree of compression ...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…
... table, heap, stack and queue. Byte- and word-circular buffer will ... call "u_malloc" to get a block of memory large enough to ...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…
... 6912-byte screen$ for whatever (maybe add it to the block memory ...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…
... loop.
The next block of code declares rectangles that ... returns a standard joystick status byte that indicates which directions/fire ... asserted. The standard joystick status byte is returned by all the ...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…
... initialized to contain exactly one block for a single struct_sp1_ss in ... the left side and 2-byte, indicating the graphics are composed ... returns the standrard joystick status byte that is stored in 'i ... have been merged into one block. If this test program hadn ...Biotoxins redumping projectI've been spending quite a bit of time between dumping STP / MIA titles at looking at the titles flagged by Biotoxin as possibly needing a redump... …
CSW Viewer will do a block 11 with an incomplete last byte. The pulse colouring has to be used. A pure data block can also be done with an incomplete last byte.Biotoxins redumping projectI've been spending quite a bit of time between dumping STP / MIA titles at looking at the titles flagged by Biotoxin as possibly needing a redump... …
... /> WORD pause after this block (ms)
BYTE general flags (b0: initial ... table (rows=alphabet symbols)
BYTE [..] pilot block data
*data ... table (rows=alphabet symbols)
BYTE [..] data block data
Each ...
