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Xark does not loadXark does not load on many emulators (e.g. Klive, Fuse, FBZX Wii) both with speed load routine and normal mode. [url]http://www.worldofspectrum.org/…
... tzx file generate a flag byte error since the ROM expects ... -
Optimal shifting for set pixel?Hi, I'm optimizing my set pixel code. For speed. But without using partitioned memory (i.e. a table on 256 byte boundary) I have optimal memory addr…
... .e. a table on 256 byte boundary) I have optimal memory ... -
ANN: Pro-Dos V2 for Sam COUPE onlinefrom [url=http://www.samcoupe-pro-dos.co.uk]www.samcoupe-pro-dos.co.uk[/url] A big thank you to Chris Pile for his work on getting this project fini…
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A large (63238 byte) Transient Program Area for external ... -
Anyone can help with hacking TwisterI believe I have found a truly unhackable game. Twister The mother of Charlotte.... It's the decryptor starting at 65068 I'm having problems with. …
... screen memory and stores the byte from that address. It then ... mem address and stores the byte, and pokes the previously collected ... byte in its place. so it ... -
They Stole a MillionI noticed that the tzx on the site is missing a Speedlock Block for Part 2. I don't own the original so cant make a perfect tzx, but I did recreate t…
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2) recreate the check byte. By XORing all the encrypted ... -
Repton ManiaHi all, I am the creator, and look after, the Repton Resource Page ([url]www.reptonresourcepage.co.uk[/url]). For the site, I have written a freely …
... Level size in rows (1 byte per level)
0x13E6C ... in bytes across. Each byte is 8 pixels (0 ... Length
0x0002 1 byte Page
0x0003 x ... yy, which stands for "byte yy repeated xx times". Only ... 02 ED. Finally, every byte directly following a single ED ... -
Hooky - hook ZX ROM and rewire RST and NMI to RAM - rantThis is a rather long rant. Not for short tempered. :) The objective is to hook into RST "vectors" and NMI on a Spectrum without affecting the normal…
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RST instructions are 1-byte jumps to predefined addresses. For ... -
analysing program variable usageIf I wanted to count the number of times each variable is referenced while a program is running (not the number of times each variable is referenced …
... to point to an $80 byte then LOOK_VARS will always return ... )-1 (pointing to the $80 byte again) and then RET to ... -
New from Paul Farrow, the ZXC4This is exciting stuff!!!! Sorry if ive stepped on your toes Paul, wanted people to hear about it!!! [QUOTE]Hi I?m happy to announce the release o…
... bytes out of every 16384 byte bank). Not only does this ... -
Can anyone explain this result?This little sub-routine isn't always doing what it's supposed to; ie. transfer the value from SEED to VARS. Can anyone explain why? I've put in the P…
... /> The difference in the lo-byte is always 24, which is ... -
PLOTTER - display file utilityI've been disassembling Gyron and needed something to help with working out where things were being put on the screen, so I wrote this program. I was…
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rightmost pixel of that byte.
[/quote]
and ... -
1st interface in 30 years (update)Hi all, Just a wee update to my "1st ZX interface in 30 years" project. Main IC's: 82C55 three 8-bit port I/O (configured for 12 dig in, 12 dig out…
... them is easy):-
byte low = VALTOSEND & 0xFF; // Take ... the lowest 8 bits.
byte high = VALTOSEND >> 8 ... -
ZX-Assembler file handling concept[QUOTE=clausjahn;777075]Dear readers, At this time, it's a good time to ask you, the future users, how to implement the file usage. Let's suggest so…
... , ZX-Assembler would open any byte-based datablock, including SCREEN$ blocks ... -
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.…
... [code];HL = address of first byte of character pattern
;DE ... of incrementing the high byte of the display memory address ... , we increment the low byte:
[code];HL ... inc e ;Increment lo byte instead of hi byte
djnz BucScan ... -
The complete Jet Set Willy RAM disassemblyFrom the creator of the [url="http://pyskool.ca/disassemblies/skool_daze/"]Skool Daze[/url], [url="http://pyskool.ca/disassemblies/back_to_skool/"]Ba…
... a complete disassembly, of every byte, with annotations, all in one ... -
Issue 6 repair with a twist...(Starting with a slight grump - the forum ate my first attempt at this so this'll probably end up being a bit terse :)) I got a Issue 6 48K machine …
ZX-Blockeditor 2.3.1 publishedDear readers, just want to tell you that there's an update on ZX-Blockeditor: version 2.3.1. I made the following updates: 1. Ralf reported some p…
... found the problem that wrong byte cells of the memory editor ...The complete Manic Miner RAM disassemblyHot on the heels of the [url="http://skoolkit.ca/disassemblies/jet_set_willy/"]Jet Set Willy disassembly[/url], here is [url="http://skoolkit.ca/disa…
... Miner RAM disassembly[/url] (Bug-Byte version). Just like the Jet ... mention in passing, leaves no byte unannotated - comes with [url="http ...SpritesYes yes, I know this has been hashed over plenty of times before, but... I have knocked up a quick tiling routine which works with my back buffer co…
... a table to reverse a byte depending on whether they are ...Tinkering with DMASo, some afternoon tinkering... [img]http://photo.alioth.net/tmp/dma_small.jpg[/img] The purpose of this all is to see what's possible using the Xi…
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* Constant byte block fill.
On the ... takes 16 T-states per byte.
A DMA ... take 6 T-states per byte copied.
... like 21 T-states per byte!
Also, ... concept just does constant byte fills). Verilog source will ...Pixel level collision detection[SIZE=3][FONT=Calibri]I need to do some pixel level collision detection. Assuming I have a byte of my ?player? sprite in DE and a byte of screen to t…
... detection. Assuming I have a byte of my ?player? sprite in ... DE and a byte of screen to test in ...64x48 monochrome big pixels display ideaHi. I was playing with this idea of having a simple 64x48 bytes buffer, 1 byte per pixel, then a renderer which would take that buffer and render it…
... simple 64x48 bytes buffer, 1 byte per pixel, then a renderer ...ZX-Modules updatesDear readers, depending on a common change on the file list (establishing the meta block feature), I've updated many of my ZX-Modules applications. …
... reported by dbolli: Copying byte data from the byte view, the last ...ZX rom type detectionHere is routine for fast detection of zx rom / computer model. [URL="http://velesoft.speccy.cz/other/ZXROMDETECT.zip"]http://velesoft.speccy.cz/othe…
... ZX Spectrum 48 rom contain byte #BF at address (#004B). If ... byte is different, then it's ...Help for beginner with z80Hi chaps, I'm reasonably new with z80, but had a fair amount of experience with 68000, so decided to give a few things a go. One little thing I'm t…
... bitmap and left-shifting each byte by 1 to 'get' whether ...HALT: Why always 4ts?Instruction breakdown of halt is like that: PC 4ts. That means it fetches instruction byte from ram which tooks 4 ts and then does nothing and read…
... /> That means it fetches instruction byte from ram which tooks 4 ...How big is the program?I've got the following one line program (running in a 48K Spectrum emulator) [CODE]1 input n:let n=n-int(n/4)*4:print "1 i -1-i"(n*2+1 to n*2+2)[/CO…
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With one keyword=one byte, I figure it should be ...ANN: Tipshop updated Saturday, 06 June 2015Saturday 06 June 2015<br>Welcome to the May update (eh? Ed).. Shh! Archie Robins appears to have decided sleep is something that happens to other peo…
... , By Fair Means...or Foul, Byte Bitten, C5 Clive, Cabal, Caesar ...76 ZX Spectrum cassettes for sale (Originals)Hi all! I have a total of 76 different ZX Spectrum cassettes for sale. They are all originals. Some of them have quantities of two or more. They a…
... Jetman
Manic Miner-Bug-Byte Software
Manic Miner-Software ...Fuse tests - INC BC causes contention delayHi all, In the FUSE test suite it has the following for the output of opCode 0x3 (INC BC): 0 MC 0000 4 MR 0000 03 4 MC 0001 …
... port) affected.
is the byte written or read. Missing for ...