-
Cross platform developmentI'm just vaguely considering supporting a few more retro 8 bit platforms for something I have in mind to do. Just Z80 and 6502 really, but that cove…
... meant to be close to asm and the culture is ... graphics, is being passed into a char*. The current C standard has ... argc, char *argv[]) { /* ... */ }
or equivalent;10)[B] or in some ... might get things like a commandline passed in and integer returned. Then ... -
Cross platform developmentI'm just vaguely considering supporting a few more retro 8 bit platforms for something I have in mind to do. Just Z80 and 6502 really, but that cove…
... 737674]C warnings are like a nagging mother. Errors are ... meant to be close to asm and the culture is ... much take that to heart in my own C code -- ... graphics, is being passed into a char*. The current C standard has ... same game more than once a day. No I still ... -
Cross platform developmentI'm just vaguely considering supporting a few more retro 8 bit platforms for something I have in mind to do. Just Z80 and 6502 really, but that cove…
... Shifter;737751]Replace the char* argument you pass as 0 ... behind a couple of standards.
The underlying asm is ... that parameter as a char* allows using a pointer to graphics data ... prototypes in the header to expect void* rather than char* gets ... -
Converting an integer arbitrary large binary number into a printable decimal formThis was asked a long ago at the comp.sys.sinclair newsgroup. At that time, I came up with a solution by extrapolating the classic algorithm of suces…
... amp; carry procedures together in one pass rather than ... the multiplication & carry in separate passes. So each ... code]
; Massive-bit.ASM
; print a very long binary number as ... $2d2b ;STACK_BC stack the number in BC
rst $28 ... -
Converting an integer arbitrary large binary number into a printable decimal formThis was asked a long ago at the comp.sys.sinclair newsgroup. At that time, I came up with a solution by extrapolating the classic algorithm of suces…
...
; Massive-BCD.ASM
; print a very long binary number as ... $2d2b ;STACK_BC stack the number in BC
rst $28 ... o(n) )
;first, add in the next octal digit from ... ;length of binary number in bits (min.24, max ... -
A new full-screen bicolor engine called NIRVANA[I]OK, there's something I need to clarify first: Nowadays if you write [B]"multicolor"[/B] everyone assumes it refers to "multicolor 8x1" (an attri…
... a text print routine then, that can write a character from a ... (unsigned char chr, unsigned char *attrs, unsigned char lin, unsigned char col ... provide an actual advantage in this case. The main ... just provide a routine to paint a character in bicolor, since ... -
ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …
... ((unsigned char *)16384));
...
}
}
#asm
... be a reason for [strike]the ampersand in the ... and[/strike] extra parenthesis in the second parameter, but ... Perhaps these problems were fixed in latest z88dk?
Beepola v1.08 AvailableA new version of Beepoa, v1.08, is now available for download from:- [url]http://freestuff.grok.co.uk/beepola/[/url] (1.76MB zipped exe, no installe…
... I've tried composing a tune in Beepola, compiling it ... the following C code in z88dk ? la "Beeper ... a reset Spectrum!
[CODE]extern unsigned char beeper [];
#asm ... // Play tune
#asm
call _beeper
#endasm ...Beepola v1.08 AvailableA new version of Beepoa, v1.08, is now available for download from:- [url]http://freestuff.grok.co.uk/beepola/[/url] (1.76MB zipped exe, no installe…
... if you put them in a #asm/#endasm block that is ... (ie you embed that asm in a C program) then the ... a reset Spectrum!
[CODE]extern unsigned char beeper [];
#asm ... />
======
"frankt.asm"
XDEF _frankt ...Changing the font in z88dkEither I've got this backwards or the documentation is incorrect... :smile: "[URL="http://www.z88dk.org/wiki/doku.php?id=platform:zx"]The standard Z…
... can't have inline asm in the global scope in a C program, ie ... /> [code]
extern unsigned char font[];
#asm
_font: binary ... />
extern unsigned char font[];
extern unsigned char sprite[];
Writing faster BASICIn terms of structuring BASIC programs, what are the best ways allocate variables, functions, arrays? Any tips. I remember INPUT mag had some suggest…
... like it could be modified in a lot of ways but ... In issue 16 they provided a line trace for basic, written in ASM that ... br />
4990 Print "Initialising...."
5195 Print "Almost on it ... ..."
5315 Print "Ok getting down to work ...About how z88dk generates code and makes room for variables.When you attempt to code games for the 128K models using z88dk in C you need to somewhat control where variables are stored in memory. I thought tha…
... problems. Have I hit a weak point in the compiler or am ... main_script_offset;
extern unsigned char *script;
#asm
._script defw 0 ... in this snippet:
[code]unsigned char __FASTCALL__ read_byte (void) {
#asm ...About how z88dk generates code and makes room for variables.When you attempt to code games for the 128K models using z88dk in C you need to somewhat control where variables are stored in memory. I thought tha…
... {
unsigned char script_result;
unsigned char script_something_done;
unsigned ... int main_script_offset;
unsigned char *script;
} GLOBALS;
in asm and just extern them in a global.h ...About how z88dk generates code and makes room for variables.When you attempt to code games for the 128K models using z88dk in C you need to somewhat control where variables are stored in memory. I thought tha…
... two kinds of global variabales in C : the initialized and ... (the latter are stored in an area that is sometimes ... br />
struct _f { int a; char b; };
extern ... 0;
}
// "globals.asm"
defc start_group_a = $c000 ...About how z88dk generates code and makes room for variables.When you attempt to code games for the 128K models using z88dk in C you need to somewhat control where variables are stored in memory. I thought tha…
...
extern int a;
extern char b;
extern long ... ];
extern struct _f { int a; char b; } f;
...
}
// "globals.asm"
defc start_group_a = $c000 ... should be written in an easier declaration syntax.Idiots Guide......To machine code, or assembler language...whatever the appropriate term is Basically at this stage I want to fiddle about and try and get used to…
Shame there is not a site or page that would give you a side by side coding,
ie. say how print works in basic/asm/C or how to do a cls in basic/asm/C
and so on.Idiots Guide......To machine code, or assembler language...whatever the appropriate term is Basically at this stage I want to fiddle about and try and get used to…
... you a side by side coding, ie. say how print works in basic/asm ... /C or how to do a cls in basic/asm ... memories of programming accounting systems in C - of which I ... reference source for anyone programming in Z80 assembler on the ...Idiots Guide......To machine code, or assembler language...whatever the appropriate term is Basically at this stage I want to fiddle about and try and get used to…
... you can't just code in asm using a C compiler -
[/quote ... never have to touch C in a C compiler environment. The assembler ... and then the ROM to print the result.
[code ... the assembler
// z80asm prog.asm -lz80.lib (approximately - I don ...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…
... to look for this function in a library
call asm_utoa ; ... /> rect_fullscreen:
defb 0 ; y char coordinate 0-23
defb ... documentation on using these libraries in asm as I know it's ... start to see things happening in a couple of weeks, free- ...Is ESXDOS flexible enough to incorporate e.g. Spectranet commands?I was just discussing the idea with someone about the wish some people have to be able to combine interfaces such as DivIDE (Plus) / DivMMC EnJOY! wi…
... driver is handled is a structure in IX that describes the ... and a message delivered in registers and identified in the A register.< ... very small and qualifying a char is a simple matter of exchanging ... 000 lines of asm in the past three months. In the previous ...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…
... more problem for real asm programmer, if he do ... data be given a name. eg, "ld ix,print; jp (ix ... "print".
I may have misled you a bit in ... Source code is stored in a partially assembled state with ... and obv yes, in C your asm routine had to be ...Creating a linked list in Z80[FONT=Calibri][SIZE=3]I am using a circular buffer to store tiles to be displayed on the screen. Tiles only appear for a set period of time, so when …
... several C++ STL containers implemented in asm in z88dk that are mainly untested ... same as forward_list. This is a singly-linked list type so ... same type as found in C#. This is a doubly linked list ... expense of a little speed.
The "p_" in the ...clear a windowed area of the screenHi everyone! Ain't been on here for donkeys, but have recently started messing around with a little game. I'm looking for ideas/opinions on the bes…
... , specifically sp1_ClearRect_callee.asm
[/QUOTE]
In this case it ... bytes. The update engine in sp1 must eventually write those ... you clear the area then print a menu, it will only write ... on the display is common in old video game systems. ...Detecting flash mode inversionsIs is possible to detect with certainty when flashing characters change from normal to inverted and vice-versa?
... be updated every frame (and a midget):
[code ... IF (m>1) THEN PRINT AT 0,0;" ": GO ... TO 10
40 PRINT AT 0,0; FLASH 0 ... can do the same thing in only 2 lines" :)
... to give a proper timing, so it should be coded in asm anyway.FZX: a new standard format and driver for proportional fonts[B]FZX[/B] is a very compact and efficient (although extremely flexible and powerful) standard format to create new fonts for the ZX-Spectrum. It sup…
... is printing in colour. The fzx_state contains a foreground attribute ... the screen are retained. In the first screen, four ... char is coloured. If you have a large font and print a ... the write justification functions (in this program, fzx_write_justified()). If ...FZX: a new standard format and driver for proportional fonts[B]FZX[/B] is a very compact and efficient (although extremely flexible and powerful) standard format to create new fonts for the ZX-Spectrum. It sup…
... to the maximum rectangle around a char so the full height and ... the full width of the char will be coloured. Colouring will ... will still see some gaps in colour in the fzx_reader but there ... in the low level print functions. I'll look at this too -- a ...FZX: a new standard format and driver for proportional fonts[B]FZX[/B] is a very compact and efficient (although extremely flexible and powerful) standard format to create new fonts for the ZX-Spectrum. It sup…
... maximum rectangle around each individual char
* if attribute_mask ... a point in the string/buffer to one past the last char ... that will fit a given pixel ...
* string_puts / buffer_write: just print the chars, \n is understood ...Testers for new z88dk clibA long (long, long, long) time ago a few people offered to help test the new clib in z88dk. Much time has passed since then and I won't hold people,…
...
// A Hashed UDG for Background
unsigned char hash[] = { ... Declared in ASM at End of File
extern unsigned char ... crts. "-startup=31" is a minimal crt without any FILEs ... files. You can create a binary of a certain size (say, ...Testers for new z88dk clibA long (long, long, long) time ago a few people offered to help test the new clib in z88dk. Much time has passed since then and I won't hold people,…
... colour(unsigned char x,unsigned char y,unsigned char color)
{
#asm
ld l,a ; put in l.
ld a,c ; get y ... br /> ld l,a ; put in l.
ld a,b ; get y ...Testers for new z88dk clibA long (long, long, long) time ago a few people offered to help test the new clib in z88dk. Much time has passed since then and I won't hold people,…
... ,unsigned int y,unsigned char *gfx)
{
#asm
IF ... wrapping your asm function in a C header, sdcc is creating a stack frame ... /> ; void drawchar(unsigned char x,unsigned char y,unsigned char *gfx)
