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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... …
... each symbol in the pilot block data is represented by a ... /> WORD number of repetitions
BYTE symbol
"
Which does ... -
hdf format extensionAs I see, there is no field in hdf header for LBA total sector count. Size is calculated in emulators (at least in Fuse) by CHS. Interesting is that…
... the identify structure, your 1024 byte header sounds like a good ... a simple image of a block device, without any extra interpretation ... -
ZXLFN - storing tape header in a long file nameHi lads ;) Couple of months ago, the group of guys interested in divIDE software development has came up with an interesting idea - store tape heade…
... many texts, as the last block of the demo. Then, i ... /> - i'll simply load the block into text editor, i'll ... /> - i cannot always load the block simply into any text editor ... , modified to remove the length byte in the header? (If your ... -
SupadriveHere's an MDR image of Supadrive. Works with Spectaculator, but I haven't tested it with any other emulators. [url="http://www.superfudge.demon.co.u…
... copier dumps out a CODE block :-
1st pass - S254 ... 30783,33667 (62*543 + 1 byte for MDR write protection)
block.
Answer n for an ... unattended dump of each CODE block.
2. Write protect ... -
Pimp my code...Erm, this is just the result of a mental exercise - I wanted to repeatedly display a UDG but decided against using a ROM routine and UDGs! Any sugges…
... necessarily writing the same byte to a block of memory. It ... LDI does supply a byte counter function that if ... lessen the impact of the byte counter:
... = 13.8 cycles per byte written. An LDIR takes ... to 2 cycles per byte write, nothing to sneeze ... -
TZX format questionProbably a daft one, but I like to be sure of these things! For a block type 10 (a standard speed data block), the text states that all values in s…
... is a 2-byte field in a type 10 block for the ... must add an additional Pause block to make up the extra ... -
The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…
... PHA ; BY SAVING LOW BYTE ON STACK.
LDA ...
PLA ;PULL LOW BYTE FROM STACK
INY ... /> .org $c300
ArrayAddress: .block 256
--------------------------------
... -
The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…
... rather than one. The repeating block instructions (LDIR, CPIR, etc), in ... to being saddled with 2-byte opcodes were constructed such that ... -
The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…
... 8x8 blocks of pixels. Each block has a selectable forground color ... and background color for each block. That means on the Plus ... with additional pallette control. 1 byte holds 4 pixels.
byte represents 2 pixels in that ... -
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…
... there is only one 16k block that is contended.
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…
... there is only one 16k block that is contended.
byte utility to do this published ... -
R: Tape Loading ErrorCan anyone explain how the Speccy knew that the loaded code was corrupt? I thought that in machine code every byte could be a instruction, so how wou…
... byte by simple XOR instruction (exclusive OR). By end of tape block ... 1 extra byte with that checksum is ... is sompared by end of block load - if matches not you ... message.
Sending checksum byte in some intervals ( for instance ... -
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…
... bytes of the block share the same lower byte of address. Moreover ... they share the same lower byte with block's attribute address (colours ... accesses (one access for LO byte, and two HI bytes ... around the memory. Eventually, solid block of 6912 bytes (albeit non ... -
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…
... bytes of the block share the same lower byte of address.[/QUOTE ... -
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…
... accesses (one access for LO byte, and two HI bytes for ... /> :-)
Considering that one byte atribute is for 8 bytes ... less attribute byte load - just once for whole char block if 64 ... -
Question for the tzx dev guru'sI'm almost finished with a batch of adventure tapes which I've got on loan.. The final tape, is a development version of Birthday Surprise, which ha…
I can get the last 639 bytes of that but it's still way short of reconstructing the whole block :(
Well, 638 as the last one is the checksum byte. -
Xenon TriOxide (Xeo3)I just wanted you all to know that a new cross platform game has started development (well the +4 version has been around a while, but my colleague f…
... character based algorhythm. every 8x8 block has a empty/used flag ... ), LD L,C (restore lower byte of pointer), AND A (clear ... -
Scrolling Loader CounterPlease can someone help me with writing a scrolling counter for a loading system. I like the Hewson counter so i`ve taken the font from zynaps loade…
... . It gets the length of block from the header for the ... loader for loading any code block.
I don`t ... are collected, loader put whole byte at adress pointed by IX ... -
Election of the new maintainer of the TZX formatHi folks, the topic says all, let the discussion begin :) Luca
... , is the ID.19 block alright for ZX81 tapes too ... been removed, every ZX81 block 0x19 would have to be ... preceded with a block 0x2b. Personally I'm ... sync info in the 0x19 block when you could use ... flags (The block used to have a flags byte?) to indicate ... -
SjASMPlus cross compiler of Z80 assembly languageHi! I want to present you cross-compiler of Z80 assembly language: [B]SjASMPlus[/B]. [SIZE="4"]Features:[/SIZE] [LIST] [*]Z80/R800 documented and un…
... x" where x is the byte-boundary to align to. However ... do something like:
[CODE] BLOCK #66 - $, 0[/CODE]
Which ... -
Help understanding some z80 asmI'm trying to work out how to represent the structure of a "sprite" in the SAM as "Grabbed" by SmallC. I can see the assembler implementation but I …
... block in the current screen page (specified by CUSCRNP); the first byte ... width in bytes, the next byte is the length in pixels ... the following bytes store the block,
scan line after scan ... line. BC holds the block length, including the a header ... -
Help understanding some z80 asmI'm trying to work out how to represent the structure of a "sprite" in the SAM as "Grabbed" by SmallC. I can see the assembler implementation but I …
... only.
Place a block of data on
(0133H ... can only be aligned to byte accuracy). The x-range
block, all bytes of
the ... saying that each line of block must be always at least ... -
Help understanding some z80 asmI'm trying to work out how to represent the structure of a "sprite" in the SAM as "Grabbed" by SmallC. I can see the assembler implementation but I …
... saying that each line of block must be always at least ... />
So if you PUT block was 10x10 pixels, it would ... per line (2 pixels per byte) so it would be just ... -
TZX revision 1.20 finalSince everybody seems to agree with the last propositions, the specification for the TZX file format revision 1.20 now becomes final and you can find…
... the saving routine splits the byte stream into smaller units (bits ... is that in a 0x11 block, one bit in the TZX ... the case for a 0x19 block with more than two symbols ... -
TZX revision 1.20 finalSince everybody seems to agree with the last propositions, the specification for the TZX file format revision 1.20 now becomes final and you can find…
... is that in a 0x11 block, one bit in the TZX ... the case for a 0x19 block with more than two symbols ... routine.
If you have byte split into four two-bit ... - that's how the $19 block is designed to work, so ... weird. The purpose of the block right from the start is ... -
Aggravating problem with screensI've rewritten my Sam C runtime emulator code ( well almost ) to allow me to use my own routines for blitting sprites onto the screen, storing tiles …
... block with the sprite routines in have a header:
byte ... 1: return block
byte 2: return address
byte 3: sprite data block ...
byte ... in sprite data block ( if not ... -
TZX revision 1.20 finalSince everybody seems to agree with the last propositions, the specification for the TZX file format revision 1.20 now becomes final and you can find…
[QUOTE=Woody]What does this block 0x19 offer of any real ... abstraction, which makes things like byte editing and flashloading possible. It ... -
NEW games for you chaps (and girls too) ;-)Okie, did some .TAP versions of NEW original games that were only released on TRDOS disk format. Some of you might have seen some (one or two are eve…
... . I decided against doing any block loading from basic because it ... $556 ; load in the headerless block
Thats why SEC2TAP ... , and normally I use flag byte of the headerless blocks to ... -
Question regarding Manic Miner (Bug Byte) Acquired another Manic Miner (Bug-Byte Release ?(one that has the guy with the beard on cover)) on eBay (part of someones collection) The thing is,…
... block 3 "MM2".
Whilst the two other Bug Byte versions ... on WoS are:-
Block 1 "ManicMiner", block 2 ... "MM1" and block 3 "MM2".
Block 1 ...
