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Help! Reverse engineering a Spectrum game[deleted]
... code rather than call out to a subroutine. It is ... everywhere then you would have to search and replace it all ... code...
BTW - "Number to string converting routines" would be used ... screen. I should have wrote "Integer to string converting routines". -
Back to BASIC[U][B]Archaeology guide to programs compiled used MCODERII.d[/B][/U] After various people have been talking about "Frank'n'stein" I decided to finis…
... variables are defined, all 26 string variables (A$-Z$, the name ... are defined and all 26 integer arrays (A()-Z(), the ... [LIST]
[*]base+0 = pointer to string
[*]base+2 = length of ... +4 = absolute maximum length of string
[/LIST]
Additional ... -
Questions about BasicHi everyone, I am Max, student of media studies in berlin, and I have to do a little project on the spectrum. I am working on a sinclair zx spectrum…
... BASIC programming in order to get to know the medium ... some answers, ways how to program these things on ... 1. This was just to show how to work with arrays / ... the value of a integer or string, I don't know ... programming it's about getting to know the machine.
... -
Compilersaside from SE Basic Compilers, what are some other good ones? Personally im afetr HISOFT Compiler for 128k, but if theres any others it would be nice…
... for simple "write a program to work something out" concepts, I ... anything that was ever released to work within the Spectrum ... just about anything, floating point integer or string.
The ... 128K version comes very close to ... -
Calling ROM routinesFirstly, sorry if this is the wrong forum to post this in, but I wasn?t quite sure under which heading is best fitted. I?m trying to figure out how…
... trying to figure out how to invoke the LOOKVAR ROM routine to discover ... set the values of Basic integer and string variables from machine code ... -
Calling ROM routinesFirstly, sorry if this is the wrong forum to post this in, but I wasn?t quite sure under which heading is best fitted. I?m trying to figure out how…
... set the values of Basic integer and string variables from machine code ... just can't get zx_setstr to work.
It looks ... source string. Can't figure out what BC is supposed to do ... -
Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... compiler would have used integer division to compute the result (both ... () takes as argument a string to be printed that contains format ... in the printf() format string above is how we can ... , there is a problem with integer to float conversion. "(float)(a) / ... -
New platform game: Sid SpannersHi all, here is my Christmas present. A new platform game (well, more of a mini-game really). [url=http://java.cms.livjm.ac.uk/homepage/staff/cmspc…
... archive, so thanks yet again to Martijn for uploading the updated ... and I'll have to rename it to "Sid Spanners 3: The ... . However, they instead go down to "00" lives remaining. (they ... routine which converts an integer to a decimal string is only expecting a ... -
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 …
... /> [code]
; write unsigned decimal integer to ascii buffer
string, int radix)
;
; common function that writes integer in ... , compute_lp
; write digits to string
; ix = char * ( ... -
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 …
... library I do have to stick to some specs:
... to the
objects being compared. The function shall return an integer ... less than, equal to, or
... array is 2 bytes (pointer to string)
ld ix,strcasecmp_callee ; ... -
Project on ZX Spectrum in UniversityHi everyone, I am Max, student of media studies in berlin, and I have to do a little project on the spectrum. I am working on a sinclair zx spectrum…
... some answers, ways how to program these things on the ... 1. This was just to show how to work with arrays / vectors ... />
FOR i=1 to 3: b=b+a(i ... get the value of a integer or string, I don't know ... programming it's about getting to know the machine.
... -
Compiling Lisp to Z80.I am doing some thought experiments on this. Here is an example of a Lisp program. It adds two numbers together. [code] (define (add x y) (if (= …
... to tell if x is a number or a string, ...
For your program to support dynamic data types you ... need to define and pass around ... references (pointers) to your variables which would ... it's type (1=Integer, 2=String etc.) followed by ... -
SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... hl, bc ; end of string plus one to HL
dec hl ... location
bit 6, c ; string?
jr z, dim_clear ; jump ... so
call int_to_fp ; else integer to last value
cp '.' ; decimal ... -
Documentation for SP1 for Z88DK?(I was going to post in [URL="http://www.worldofspectrum.org/forums/showthread.php?t=11729"]the other thread[/URL], so if a mod thinks this should go…
...
; write unsigned decimal integer to ascii buffer
;
; enter ... /> ; write two leading zeroes to output string
ld a,'0 ... to the terminating \0 byte so you can continue building a string ... -
Simple/standard Linux assembly development environmentIs there a standard or recommended Spectrum Z80 assembly language environment for Linux based folks? I was looking at the assembly language posted in…
... )
[/quote]
Just to update that: sdcc is now ... from asm including float math, integer math, string functions, stdio functions, sorting ... -
How to write a simple C+asm horizontal scrolling game (Tutorial, z88dk)[b]How to write a simple C/asm horizontal scrolling game[/b] [b]Note:[/b] This tutorial has multiple parts... I am still writing but this first pa…
... , this looks pretty similar to the basic version now.
to print a string.
And ... , one to print a string, and one to convert an integer to a string.
[b]Here is the complete code, up to ... -
Console frameworkStill working on Specotron, but at the point where working out the diagonal lines collision is not good at beer o'clock. In the meantime I've knoc…
... ; HL = pointer to string
; DE = pointer to end of string
putstode:
SYM_TBL_ENTRY "char->integer", chartointeger, 0
SYM_TBL_ENTRY " ... ?", isbool, 0
SYM_TBL_ENTRY "integer?", isinteger, 0
SYM_TBL_ENTRY "cls ... -
Console frameworkStill working on Specotron, but at the point where working out the diagonal lines collision is not good at beer o'clock. In the meantime I've knoc…
... ; HL = pointer to string
; DE = pointer to end of string
puts_hltode:
SYM_TBL_ENTRY "char->integer", chartointeger, 0
SYM_TBL_ENTRY ... ?", isbool, 0
SYM_TBL_ENTRY "integer?", isinteger, 0
SYM_TBL_ENTRY "cls ... -
Console frameworkStill working on Specotron, but at the point where working out the diagonal lines collision is not good at beer o'clock. In the meantime I've knoc…
... ; HL = pointer to string
; DE = pointer to end of string
puts_hltode:
integer arg
requiresarginteger:
ex ... ?", isbool, 0
SYM_TBL_ENTRY "integer?", isinteger, 0
SYM_TBL_ENTRY "cls ... -
Console frameworkStill working on Specotron, but at the point where working out the diagonal lines collision is not good at beer o'clock. In the meantime I've knoc…
... ; HL = pointer to string
; DE = pointer to end of string
puts_hltode:
integer arg
requiresarginteger:
ex ... ?", isbool, 0
SYM_TBL_ENTRY "integer?", isinteger, 0
SYM_TBL_ENTRY "cls ... -
Screen2StringFurther to writing that BASIC one-liner to redirect CAT to a string I thought that I'd do a general redirection routine for anything which normally p…
... that BASIC one-liner to redirect CAT to a string I thought that ... /> REM sa=string address; sl=string length; sd=DEFADD pointer to string definition
7 LET sa=sd+20: FOR p=sd TO ... -
quick RAM copy using LET in BASICI'm in the process of reviewing, revising and refining all the programming tips & utility routines which I've posted on this forum over the last eigh…
... either a string expression (if referencing a string variable) or ... REM TO COPY string to RAM or RAM to string or RAM to RAM< ... PARAMETERS
a$=destin string expression, or destin location ... RAM;
b$=source string expression, or source location ... -
Console frameworkStill working on Specotron, but at the point where working out the diagonal lines collision is not good at beer o'clock. In the meantime I've knoc…
... /> ; C = character code to display
putc:
... /> ; erase last char written to screen
unputc:
ld ... cursor_col
; C = value to draw as cursor
undrawcursor ... position
; HL = pointer to string
puts:
ld ... -
Let a=val "1"I see some basic programs which use Let a=val "1" instead of let a=1 syntax. what is the difference between val "1" and 1? is it an effect of some …
If only needed in a FOR NEXT LOOP you could use
FOR X = SGN PI TO SQR PI
even in strings you can use it since BASIC will take the closest integer to SQR PI, hence 2.
Try this
PRINT "HELLO"(SQR PI) -
Platform vs BackgroundForgive my ignorance if this is a 'stoopid' question, but although I've written games for many platforms over the years I'm only now making my first …
... with different virtual colours to identify different platforms of ... virtual pallette" to translate a virtual colour to the physical ... uses a single byte or integer to identify which state (zone ... simplifies game logic, because to check with collision with ... -
How do I convert score to 00000 formatWhat is the quickest and best way in machine code to display the score formatted in zeros. For example, My score is currently 320, so I want it to …
Excellent, thanks, I should work it out from this.
Is there a ROM routine to convert an integer to chars, i.e. 123 to 3 bytes, "1","2","3"
Cheers -
How do I convert score to 00000 formatWhat is the quickest and best way in machine code to display the score formatted in zeros. For example, My score is currently 320, so I want it to …
... ROM routine to convert an integer to chars, i.e. 123 to 3 bytes ... but you don't want to use it. Just repeatidly divide ... -
Stupid Question... but: BMP2SCRI have downloaded bmp2scr, and produced a couple of pictures in the hires formats, I can see that there are 3 binary files, a red,green,and blue, how…
... other way round - you need to specially generate an uncompressed AVI ... - it might also be able to string these into a TAP file ... . Again, you'll have to roll your own playback routine ... according to your hardware limitations and the ... -
Investor spamI've received a bizarre snail-mail spam from some outfit called Inside Track -- they're promising to turn me into a property-investment millionaire b…
... loads from people who "want to buy my motorbike" the classic ... /> *yawn* I did used to reply to string them along, but got bored. -
Floating point representationI'm planning on picking up the [url=http://matt.west.co.tt/category/spectrum/openzxrom/]OpenZXRom[/url] project from where I left off a few months ba…
... will have to support integer to float conversion anyway (which looks to me like ... might put two numbers in integer representation to your stack and want ... the math, and convert back to integer. Now, checking whether the two ...
