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RCS (Reverse Computer Screen)[B]RCS[/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small utility I'm about to release, that reorders bytes from the ZX-Spec…
... [/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small ... to 1844 bytes without header. A built-in depacker takes another ... 152 bytes, thus a total of 1996 bytes.
a total of 1888 bytes.
Freescape based on reverse engineered "I of the Mask" code?That's what Sandy White has said in this interview just published on Eurogamer: [url]http://www.eurogamer.net/articles/2013-03-06-code-britannia-san…
... Incentive designer Ian Andrew at a trade show," Sandy reveals. "He ... I remember, that they had reverse engineered my code and based ... they never offered me a job, or a royalty come to that ...Reverse Boots, platform game with an original twistHere's a good candidate for a ZX make-under, [b]Reverse boots[/b] by Denis Vasilev. :) I played through the entire game, it's kind of short (only 20 …
... a good candidate for a ZX make-under, [b]Reverse boots ... 20 levels) but still a very fun game.
... />
It's a platform game with an original ... could be done with a few prerendered sprites. Other ... than that it's a pretty straightforward platforming game ...Wow! This is really a staggering achievement (programming, but still interesting!)The subject of good/clever programming came up in the SE BASIC topic, and I thought I'd mention this, but then that thread went back on topic (er, no…
... programming is off topic in a thread about SE BASIC, ... that someone managed to make a (playable, apparently) Chess game ... />
it's a Windows PC game, and it ... (you can't even reverse the mouse Y-axis look ... the game, click here for a load of screenshots - [url ...A few questions about ZX Spectrum assemblyHi, I have a few questions about ZX Spectrum assembly language programming: - What's the best assembly tool for ZX Spectrum? I tried a bit the ZXSpi…
... />
I have a few questions about ZX Spectrum ... ZX Spectrum? I tried a bit the ZXSpin integrated assembler ... from Basic. It gives a lot of errors (bugs) ... I would like to learn a bit how to use Zeus ... define .Byte, .Word and string variables but I have no ...12v in a Spectrum +2My Speccy 128 +2 requires a 9v 2.1a PSU, all my 9v PSU's are much below 2.1 amps :( I do however have a 12v 2amp PSU, if I reverse the polarity so t…
My Speccy 128 +2 requires a 9v 2.1a PSU, all ... do however have a 12v 2amp PSU, if I reverse the polarity ... hoping that the 128 has a voltage regulator that will allow ... me to go a few volts over.Sorting BusinessThis is a little bit different from the usual game-related fare but I know there are a few people here who like this sort of thing. This is about so…
... aware. So I implemented a quicksort as replacement. Antonio ... quicksort[/URL] implementation and a [URL="http://z88dk.cvs ... />
int ascending_order(int *a, int *b)
{
... numbers[i] = 5000 - i; // in reverse order
}
// ...z80 reverse engineeringI came across Ken Shirriff's blog today where he is reverse engineering the Z80 from images of a Z80 die. I guess this may be of interest to those of…
... blog today where he is reverse engineering the Z80 from images ... of a Z80 die. I guess this ...THE LIGHTBULB EFFECT You know what that is? Like how cartoonists depict a bright idea by drawing a lightbulb over the head? When I was trying to work out the lengt…
... setting up a homemade device on a tripod with a ruler that ... swivelled against a protractor, ... with stuff like RANDOMIZE USR (string of numbers) which is ... of me even begin to reverse engineer that one except possibly ...Code optimisation! 16bit number to 5 digit stringJust for interest this one, any thoughts on how to make this as fast as possible? Little optimisations to this routine or a complete reimagining? …
... , HL at end of string,assume string doesn't straddle word boundary ... : inc (hl) ;increase string number
ld a,(hl)
cp b ... ;HL back to start of string
dec de ;decrease ... ,lp
ret
;
string:
db '00000' ;16 bit ...Jet Set Willy 2's original author releases a modded version of the game!Apologies if this has already been posted, but Derrick P. Rowson, the original author of Jet Set Willy 2, has been modding JSW2, and the latest versi…
... in code generation of reverse sprite definition. This only ... removed.
A routine to stop reoccurring death ... />
Test of a horizontally moving lift. Routine works ... likely.
A lot of sprites have been ...z88dk sp1lib with fzxThe numbers dont seem to display properly? fzx by itself works [quote] // for targets supporting fzx // zcc +zx -vn -startup=31 -O3 -clib…
... ,2,0}
};
// A Hashed UDG for Background
joykeys.down = in_key_scancode('a');
}
main()
reverse direction
if (s-> ...Reverse engineering "Stack Light Rifle"Hello I would like to reverse engineer the electronics inside the connector in the "Stack Light Rifle" to build adapters which can be used with mo…
... />
I would like to reverse engineer the electronics inside the ... /> Has anyone said gun? Could a picture be posted of the ...A game from an other machine.if someone interesting, this is a game I created in 1989. this is the basic source, maybe somebody can convert to specy. An image: http://www.ep128.…
... OFF
110 STRING Q$*120
120 STRING X$(10,20 ... )="" THEN CALL EMB:LET A=A+1:CALL EMB:GOTO 1020 ... S)=" " THEN CALL EMB:LET A=A+1:CALL EMB
1030 ... S)="-" THEN CALL EMB:LET A=A-1:CALL EMB
... S)="-" THEN CALL EMB:LET A=A-1:CALL EMB
...Is reverse engineering software now illegal?I just remembered (in conversation with someone earlier) that I read some time back that the Digital Millennium Copyright Act made it illegal to reve…
... Act made it illegal to reverse engineer any software that you ... it makes it illegal to reverse engineer specific software, i.e ... -commercial-discs software protection in a games console), but does it ... prohibit anyone from say disassembling a game to find out how ...A Neat Redefine Keys RoutinePreviously, I’ve only shared this routine with a couple of people via PM, but I’ve now decided to make it public. I optimized it for size, so it uses…
... /> ld de,ctrs ;address of string to be printed
ld ... ;length of string
call 8252 ;print string
;A crude debounce ... DE
ld a,e ;load A with E to compare ... /> ex af,af' ;save A
ld a,22 ;AT code
I've bought a HIFI tape deck in 2018 - For the Love of Compact Cassettes.You may think it odd, but I've just brought a HIFI cassette recorder in 2018. I had a crappy one I picked up at a charity shop (goodwill), which sque…
... but I've just brought a HIFI cassette recorder in 2018 ... . I had a crappy one I picked up ... at a charity shop (goodwill), which ... So the new one, its a Sony TC-KE500, with three ... and 2: almost all auto reverse heads have less than perfect ...A couple of random questions......because, why not? (1) USR0 mode on the +3/+2A/B I know of its existence, I know how it's used, and I have some games that require it to work o…
... (minus, space, space, T, and a dummy character)
Then, POKE ... unprintable one which appears as a ?
As I always ... K cursor.
Theoretically, could a machine code program on the ... br /> 1 REM (seemingly random string of characters that holds all ...Zynaps scrolling - anyone ever reverse enginnered this?Zynaps has IMO some impressive scrolling - it utilises 18 character rows of the display file, so quite a large active play area, and scrolls 2 pixels…
... the display file, so quite a large active play area, and ... scrolls 2 pixels at a time at a constant 25 frames per ... if someone was able to reverse enginneer how the display is ... that it does not use a back screen. Has anyone ever ...Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…
... pushed into a small (up to 8 bytes) string as ... a,2) - i.e. don't allow the ghosts to reverse ... direction, unless they are at a junction, else take a ... and picking a direction out of that string. This is ... />
a) Save 5 positions replacing this ...Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…
... d$ and picking a direction out of that string. This is still ... much. You will probably need a much simpler algorithm.
< ... move the previous round, maybe reverse the variable that stores the ... of the time) without requiring a separate variable to remember the ...New Guy Wants Speccy - SWAP !Hi, I`m new here so here is a little background info ! I always had a C64 when I was in my teens in the 80`s, my friends had Spectrums, so it was alw…
... I get no offers of a swap, It would be ... have been damaged by my reverse polarity episode ?
I ... question "how long is a piece of string". You could have ... the modulator, since you have a picture :D
... happy to swop you a working board for your ...Help! Reverse engineering a Spectrum game[deleted]
... /> 05 - Character and string printing routines
06 - A set of fast ... /> 08 - Number to string converting routines
09 - A debug screen that ... /> Here are some tips when reverse engineering a game:
1 ...Hacking the O.C.P Full Screen Editor/AssemblerIf you have been reading my posts recently then you will know that I am eager to have the sourcecode I wrote for the Spectrum during the period 1988 …
... didn't take long to reverse engineer the sourcecode format the ... that there was a character count before each string.
The ... />
xor a
ld (start+1),a
ld a,130
out (254),a
ld a,251
in a,(254)
FN nesting error?While playing with FN functions that call assembly, I've found something weird. Check out this code: [code]10 DEF FN f(a,b)=a+b 20 PRINT FN f(FN f(…
... cpl
ld h,a
ld a,l
cpl
L2831: AND A ; test A ( will be zero if string '$' - '$' )
... stack and do the reverse transfer to restore the ...those darned recursive functions againI've been stuck on this one all evening. I want to dump out some memory in binary to debug a program. I've got a simple mod 2 division loop to do tha…
... utility, which can take a great long string of gubbins as in ... the first example and produce a ... example, making it a lot easier to fix a broken DEF FN ... better to have the reverse facility: take a nice easy to understand ...Jimi HendrixJust to prove I have a life outside of Z80 coding. Here's a guitar I built recently: [img]http://dl.dropbox.com/u/15659782/Newport.jpg[/img] It's a…
... But when you then reverse the whole guitar it ... This is required because a reverse-rake is utterly useless ... Stern didn't think a reverse rake was utterly useless ... with a vintage pickup, otherwise ... for the high E string if the back pickup ...Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …
... = char *string
; generate digits onto stack in reverse order
xor a ; terminate string
ld (de),a
pop ... />
alpha:
add a,'A'-10
ret
[/code ...
