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Finding the length of loaded Bytes:Is there a way from BASIC of finding out how big a block of bytes loaded from tape was? i.e. - if you do LOAD""CODE and load in a lump of bytes, ca…
... /> LD A,255 (for data, XOR A for header)
SCF ...
LD A,255 (or XOR A)
JP #4C2 -
Your favourite puzzle game..Hi, Shootemups, combatsimulators, karategames.. stop violence. =) so, whats your favourite puzzle game..?? To me Anarchy from hewson is very enj…
Well, if u think about the "thinking" games in general, I would go for XOR... I love those masks and chickens :) -
Advice about drawing sprites on spectrum I've coded sprite drawing before and know all the theory about masks from a long time ago (microhobby rules! ;), but since I did it on Amiga with ha…
... it looks weird is to XOR the sprite over the background ... and then XOR it again to restore the ... -
Advice about drawing sprites on spectrum I've coded sprite drawing before and know all the theory about masks from a long time ago (microhobby rules! ;), but since I did it on Amiga with ha…
... background, xor #1, xor #2, xor #3.
To erase: xor #3, xor #2, xor #1 ... .
To draw next frame: draw background, xor ... #1, xor #2, xor #3.
It ... -
Advice about drawing sprites on spectrum I've coded sprite drawing before and know all the theory about masks from a long time ago (microhobby rules! ;), but since I did it on Amiga with ha…
... background, xor #1, xor #2, xor #3.
To erase: xor #3, xor #2, xor #1 ... .
To draw next frame: draw background, xor ... #1, xor #2, xor #3.
It ... -
Anyone for a hacking challenge ?I have to get the DSK version of Tomahawk to work. It uses the well-known Digital Integration "SECURITY CODE" lock just like in Bobsled, ATF, etc. Th…
Here's the Lenslok proggy I chose...
It's TT RACER but I'd imagine the following could be applied to all Lenslok games...
=====================
TT RACER AND LENSLOK
=====================
Ok, So the ... -
Brand new Spectrum shoot-em-upNow that Egghead in Space is finished I have begun work on another new Spectrum project, a horizontally-scrolling shoot-em-up. An early demo. versio…
nice game... and pretty code too. i did not notice that there is xor sprite routine. it really looks great and i hope u release next demo as soon as possible -
Anyone for a hacking challenge ?I have to get the DSK version of Tomahawk to work. It uses the well-known Digital Integration "SECURITY CODE" lock just like in Bobsled, ATF, etc. Th…
...
EA2A AD XOR L ;
EA2B AC XOR H ;horrible maths ... B ;yukky
EA2F A8 XOR B ;
EA30 CB 10 ... B ;yuk
EA32 A8 XOR B ;
EA33 CB 10 ... RL B ;
EA37 A8 XOR B ;
EA38 17 RLA ... -
are the following (tzx) really missing ?On the list at [url="http://www.worldofspectrum.org/stp/games.html"]www.worldofspectrum.org/stp/games.html[/url] there are some existing items ages a…
...
EMULATOR\ZX\FILES\TZX\XOR.TZX
EMULATOR\ZX\FILES ... -
Datel Snapshot II - Tape?Just noticed someone selling a Datel Snapshot II thingy, but there seems to be a tape with it, which the seller indicates must be loaded before using…
... byte in the file). Now XOR the byte at #21 with ... -
Datel Snapshot II - Tape?Just noticed someone selling a Datel Snapshot II thingy, but there seems to be a tape with it, which the seller indicates must be loaded before using…
... byte in the file). Now XOR the byte at #21 with ... -
help in byte mirroring.I need some help. What is the best way to mirror the byte? (for ex. 10010011 -> 11001001) I mean, if there is a simple way to do it (may be with OR, …
... 0 {
bit 7=bit7 XOR bit0
bit 0=bit7 ... XOR bit0
bit 7=bit7 XOR bit0 }
bit 6=bit6 XOR bit1
bit 1=bit6 ... 2 {
bit 5=bit5 XOR bit2
bit 2=bit5 ... 3 {
bit 4=bit4 XOR bit3
bit 3=bit4 ... -
help in byte mirroring.I need some help. What is the best way to mirror the byte? (for ex. 10010011 -> 11001001) I mean, if there is a simple way to do it (may be with OR, …
... 't really need all those XOR's:
... if b7 != b0 { reg=reg xor 129 }
if b6 != b1 ... { reg=reg xor 66 }
etc..., ... ; same, skip mirror
XOR 129 ; swap bits
LD ... ; same, skip mirror
XOR 66 ; swap bits
OR ... -
help in byte mirroring.I need some help. What is the best way to mirror the byte? (for ex. 10010011 -> 11001001) I mean, if there is a simple way to do it (may be with OR, …
... br /> 0012 EE81 7 Swap1 XOR 129
...
003A EE24 7 Swap3 XOR 36
... br /> 004E EE18 7 Swap4 XOR 24
... -
help in byte mirroring.I need some help. What is the best way to mirror the byte? (for ex. 10010011 -> 11001001) I mean, if there is a simple way to do it (may be with OR, …
... /> jp pe,swap6-1
xor 129
ld b,a ... /> jp pe,swap5-2
xor 66
ld b,a ... /> jp pe,swap4-3
xor 36
ld b,a ...
ld a,b
xor 24
ld b,a ... -
help in byte mirroring.I need some help. What is the best way to mirror the byte? (for ex. 10010011 -> 11001001) I mean, if there is a simple way to do it (may be with OR, …
Well there's nothing staggering but there are a few instances of little used instructions plus my favourite XOR A. -
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... =$0f masking lower nibble
xor a
rrd ; a,(hl ... -
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... decimal digits, c=0
xor a
rrd ; a,(hl ... ),a ; (hl) = BCD(7654)
xor a ; bcd rotate left is ... -
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... , c = $0f nibble mask
xor a
rrd ; a,(hl ... -
Best games you've never heard ofSorry if this has been done before. I've read some threads about the best games for the Spectrum, i think on the whole we all know about JSW, Elite, …
... )
HEXAGONIA (Atomix sequel)
XOR (logical)
F.I.R ... -
New project for 256 colours Games emulator!O.K. , I suggested Jonathan Needle ( Creator of the excellent Spectaculator at [url="http://www.Spectaculator.com"]www.Spectaculator.com[/url] ) to c…
... instructions and logical AND/OR/XOR with other graphic images but ... -
ZX81 ScrollingI'm tempted to have a go at a bit of ZX81 programming, using MCODER II, though I could really use a fast multi-directional scrolling routine. Does a…
... DE,(VAR FOR BEGINSCREEN)
XOR A
SBC HL,DE ... -
256 colour gamesFollowing on from the thread in the Emulator section... Will people who are working on converting games to 256 colour using Emuzwin please let me kn…
... . I've tried with XOR = 1 and XOR = 0, and with AND ... -
256 colour gamesFollowing on from the thread in the Emulator section... Will people who are working on converting games to 256 colour using Emuzwin please let me kn…
... trails. I've tried XOR=1 and XOR=0. Can you suggest ... -
EmuZWin supports 256 color gamesI am sorry starting new topic, but you see this info is important a bit: new version 2.4 of the EmuZWin is available to download, and it supports 25…
... three options. Normally A xor B xor B must be = A ... updates picture on screen using XOR, first time to erase it ... This includes internally leveled OR, XOR, AND, but provides correct restoration ... original picture when XOR with the same value ...
