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Xor-shift random number generator for Z80[QUOTE=Patrik Rak;320244]Come on, people, [URL="http://www.jstatsoft.org/v08/i14/paper"]xor-shift generators[/URL] devised by Marsaglia, that's the w…
... I didn't took time to examine this (and others ... My method to fast map a 32bit integer to a 0-1 ... but when reverting back to the original one the ... Calling your routine returns a 32 bit pseudo-random int, ... returned in DEHL (according to Gedlion routine above), but ... -
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 ... -
A z88dk + sp1 demo (with source)Since nowadays people are still wondering about how difficult it is to make something in z88dk, I thought I just put a very simple demo to show how e…
... L:24 Warning:#8:Converting integer to pointer without cast
... 270 Warning:#9:Converting pointer to integer without cast
... 275 Warning:#9:Converting pointer to integer without cast
... .c" L:32 Warning:#8:Converting integer to pointer without cast ... -
RFC: 64 column font codeIn BASIC, type CLEAR 49999 then import the code at 50000. Then type RANDOMIZE USR 50000. This will create a new channel and attach stream #4 to it. A…
...
#define BytesPerLine 32
#define ScreenHeight 192
;* string contains string pointer
;* falls through to _print
... data starts at space, ASCII 32
tax ; save ... -
Small Machine Code Routines Which Maybe UsefulAs part of creating Flynn's Adventure in Bombland I created a lot of little routines to do all sorts of things. A lot of these I created based on inp…
... 32768
;point IX at string then call printstring
; ... control codes (see printjptable) 32 we print a char
to 240 we need to move to a new ... a,e
add a,32
ld e,a< ... 0, 68, 0
db 32, 32, 66, 68, 68, 132, 136 ... -
Function with push and popIm trying to see if I understand push and pop when it comes to using to pass parameters to functions: [code] LD HL,16384 LD A,5 Push AF Ld A…
... /> ld hl,buffer ; address to write ascii string to
push hl
jr $
....
buffer: defs 32
....
; write digits to string
; ix = char *buf ... -
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 ... -
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…
... 96 characters from code 32 (space) to code 127 inclusive
to print a string, it will expect to be given ... sp1_PrintAtInv() to print individual characters of a string one at ... #pietro_zx.asm-110"]prints string and integers[/url] written ... -
i need a sideways scrolling program written in basicso like ghosts and goblins it scrolls along with the player. i had help with this before in making a tunnel game but this time i need it to be a able…
... when i add the second string to it.[/quote]
What ... one string on the background layer, then loops round 32 times to display ... it scrolled around. Then it prints a second string ... one then loop-scrolls that 32 times.
If ... -
i need a sideways scrolling program written in basicso like ghosts and goblins it scrolls along with the player. i had help with this before in making a tunnel game but this time i need it to be a able…
... way to do that is to print the first 32 characters to the ... So print your first string of 32 characters at row 4 ... . so just off-screen to the left the scene is ... when the view scrolls round to it.
... around. If you want to create the effect of a ... -
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 ... -
How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... b, 3 ; length of string
ld a,(ix+2 ... br /> cp 32 ; about to test A < 32 see my ... /> wearefine
; NEED TO DO THE ROW CHECK BEFORE ... ; this is what we tried to do before calling
; ... don't need to do it again
; ... -
How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... b, 3 ; length of string
ld a,(ix+2 ... br /> cp 32 ; about to test A < 32 see my ... /> wearefine
; NEED TO DO THE ROW CHECK BEFORE ... text_out
; we need to get the column back in ... ; this is what we tried to do before calling
; ... -
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…
...
e.g. to define a string containing a CR, use ... a
ld bc, 32
ldir
pop ... a
ld bc, 32
ldir
pop ... /> inc a
cp 32
jr z, .nextline ... position
; HL = pointer to string
puts:
ld ... -
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…
... , a
ld bc, 32
ldir
pop ... , a
ld bc, 32
ldir
pop ... , a
ld bc, 32
ldir
pop ... /> inc a
cp 32
jr z, .nextline< ... position
; HL = pointer to string
puts:
ld a ... -
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…
... , a
ld bc, 32
ldir
pop ... , a
ld bc, 32
ldir
pop ... , a
ld bc, 32
ldir
pop ... /> inc a
cp 32
jr z, .nextline< ... position
; HL = pointer to string
puts:
ld a ... -
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…
... a
ld bc, 32
ldir
pop ... a
ld bc, 32
ldir
pop ... a
ld bc, 32
ldir
pop ... /> inc a
cp 32
jr z, .nextline ... br />
; HL points to string of digits
skipleadingzeros:
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…
... , a
ld bc, 32
ldir
pop ... , a
ld bc, 32
ldir
pop ... , a
ld bc, 32
ldir
pop ... /> inc a
cp 32
jr z, .nextline< ... position
; HL = pointer to string
puts:
ld a ...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…
... a
ld bc, 32
ldir
pop ... a
ld bc, 32
ldir
pop ... (scr_out_col), a
cp 32
ret c
... /> inc a
cp 32
jr z, .nextline ...
; HL = pointer to string
puts:
ld ...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…
... h, a
ld bc, 32
ldir
pop bc ... /> ld (scr_out_col), a
cp 32
ret c
xor ... )
inc a
cp 32
jr z, .nextline
ret
; HL points to string of digits
skipleadingzeros:
Elite RZX filesHi there, I'm thinking ahead to the 1985 chapter of the documentary, and one thing I want to concentrate on (well, dedicate 32 secs to anyway) is El…
... /> I'm thinking ahead to the 1985 chapter of the ... I want to concentrate on (well, dedicate 32 secs to anyway) ... I'll leave that to you to decide what that ... /> But, as I want to do something vector-graphicky for ...
Please email them to me at [email="elite@the ...Fastest Block Drawing Code?Following on from my scrolling thread [URL="http://www.worldofspectrum.org/forums/showthread.php?p=351304#post351304"](http://www.worldofspectrum.org…
... direction I want to go in in order to scroll the screen ... 4x4 char block (4 bytes * 32 Rows) to the screen.
to BLIT this to the screen as quickly ...BUG in zxspin and SpecEmu - read Loading speed in WAV fileI'm created a new save, but it can run at 44.1 KHz, to test it, i make a new file from WAV 44.1 KHz to 88.2 KHz. Load this file in a emulator zx-spin…
... run at 44.1 KHz, to test it, i make a ... from WAV 44.1 KHz to 88.2 KHz. Load this ... /> The max speed is 32 KHz to 64 KHz. Someone can fix ... /> I need 88.2 KHz to make a perfect wav file ... , in 256 bytes have up to 1.500 INs errors, the ...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 ...array offset (z88dk)Im trying to simulate a 2 dimensional array by using an offset [code] #include <fzx.h> char scr[768]; int arrayoffset(char x,char y) { return (x*…
Im trying to simulate a 2 dimensional array ...
