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Code structureHi all, I'd be interested in opinions on the neatest way to do this. I've got a print string routine in which 0-31 are reserved for control codes, …
... print string routine in which 0-31 are reserved for control ... /> print_string ;ix pointing at string
ld a,(ix+0 ... control_code
...print char in string
jr print_string
... next byte can be another control code. So it means lots of ... -
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? …
... [code]number2string: ;arrive DE number, HL at end of string,assume string ... lp: inc (hl) ;increase string number
ld a,(hl ... HL back to start of string
dec de ; ...
;
string:
db '00000' ;16 bit string number
;[/code] -
Can't Get My Simple Code To RunHello again, I'm trying to run the following simple code: [code] org 32768 main ld b, 21 ; x coordinate is …
... br /> ld de, string ; string to print
ld ... bc, eostring-string ; length of string
call drawText ... ld a,22 ; ASCII control code for AT.
rst ... -
Kiwi OS for z80 computerHi everyone, Nearly made my z80 computer with 2K ROM 32K RAM. It has an OS im still writing called Kiwi (apple, blackberry, you get the idea ;D) he…
... 1527 ;LOAD HL WITH ADDRESS STRING LOCATION
CALL ASCII ;PRINT ... 1534 ;LOAD HL WITH DATA STRING LOCATION
CALL ASCII ; ... A, $A0 ;LOAD A WITH CONTROL CODE 1010
SRL B ;ROTATE ...
[/CODE]
Port 1 is the control data to ... -
why am i getting b integer out of range in this code?ive tried running this in spin but thats what i get [code]main org 40000; ; We want a black screen. ld a,71 ; white ink (7) on black paper (0…
... i get
[code]main
org 40000;
mushlp ld a,22 ; control code for AT character.
rst ... basexy ld a,22 ; AT code.
rst 16
ld ... /> ld a,144 ; ASCII code for User Defined Graphic 'A ... ,60,60,60 ; mushroom.[/code] -
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…
... normal circumstances you have no control over where that variable is ... the end of the string. So:
[code]
while ((n ... be retrieving the ascii code from the text string using "*s" and ... -
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…
... a string of arbritary length containing game data hidden in control codes ... in an 'AT 0,0' control code just as you're getting ... -
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…
... in an 'AT 0,0' control code just as you're getting ... OTHELLO "AI string", which takes 2 lines of code in the current ... would only show an empty string "".
Another trivial example ... hidden instead in a single string "" using the same trick (although ... -
speccy games at your school?this will probably only apply to those of us who were at school from say 82 to 92ish (guessing thats the majority of people here?). anyway did your…
... because of the INK 8 control code at the start of the ... to auto-load. It would string you along for a bit ... -
Print text in assemblyHello, a perhaps simple question: I would like to print a text string on the screen and I wonder how to do that in the most easy way? I seem to re…
... same as below?
[CODE]LD A,2
CALL ... 1601
[/CODE]
I picked that ... on) are handled by inserting control codes (bytes with value -
Move objectHi again, I am using paper colors to represent game objects. I have a "paddle" that is 4 pixels wide. I save its position as a 2 byte word in memory…
... de, score_string ; start of score string
ld bc, ... 12 ; length of string in bytes
call ... /> ld a, 17 ; papper color control code
RST 16 ; ... /> ld a, 16 ; ink color control code
RST 16 ; ... -
Move objectHi again, I am using paper colors to represent game objects. I have a "paddle" that is 4 pixels wide. I save its position as a 2 byte word in memory…
... de, score_string ; start of score string
ld bc, ... 12 ; length of string in bytes
call ... /> ld a, 17 ; papper color control code
RST 16 ; ... /> ld a, 16 ; ink color control code
RST 16 ; ... -
128K+ Keypad Swapsies.I've been offered a swap, a Spanish 128k keypad, for one of my UK microdrives. Is this a good swap?
... br /> * supports entering embedded control codes
* tokenizer has ...
* full screen string editor
* four new ... tester (broken)
* no string editor
* tokenizer uses tokens ... keyboard
* no embedded control code support
* no ... -
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…
... (iy + _flags) ; signal string
ret ; end of subroutine ... xor a ; signal array string or sliced string
... br /> inc hl ; skip control code
jr l_no_sp ; ... ldir ; move number or string
pop hl ; ... -
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…
... /> res 6, (iy + _flags) ; signal string variable
rst next_char ; next ... , stk_fetch ; call stk-fetch if string
jp nz, print_fp ; ... /> co_temp_2:
call co_temp_3 ; embedded control code?
ret c ; return with ... -
dumping protected BASIC loadersI wrote this a few weeks ago but forgot to post it. It will load & list from tape/TAP/TZX any BASIC program which has been saved with SAVE, including…
... 2-10: Load the m/code (for reading the tape blocks ... byte is not a print control code, print it in red, skip ... /> [*]Line 27: Print the print control code plus the following 1 (or ... number marker to build the string v$ containing the visible number ... -
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…
... 4 extra bytes in the string", then you can understand why ... . Many spectrum games use this control code trick too (at least many ... can send out a justified string to the screen. In my ... i also used another special control code to "flush the buffer", but ... -
Code structureHi all, I'd be interested in opinions on the neatest way to do this. I've got a print string routine in which 0-31 are reserved for control codes, …
... call the control code processor directly, with a code in A, ... is jump to the control code processor directly, it ... control code processor jumps back into the appropriate place in the print-string ... be even cleverer, your control code processor PUSHes the address ... -
Full-screen 32 columns bicolor engine NIRVANA+I'm glad to announce the release of [b]NIRVANA+ ENGINE[/b], providing support for bicolor graphics (multicolor 8x2) in 32 columns for all standard Sp…
... printf() and the embedded control code in the printf string. A minimum size ... magic addresses in the interface code and it would be easy ... to replace the top-border code with his own ... -
endless runner project..So I'm thinking of writing a small tutorial series on writing games for the speccy in C, and figured that an endless runner would be an easy example …
... on in the print string and the same is ... These are not vt100 control sequences and would not work ... 'd then take that string and print it with ... to screen, use the vt100 control code sequence to clear.
... you can print a control code to clear or you can ... -
Can't Get My Simple Code To RunHello again, I'm trying to run the following simple code: [code] org 32768 main ld b, 21 ; x coordinate is …
... de, string ; string to print
ld bc, eostring-string ; length of string
setxy ld a,22 ; ASCII control code for AT.
rst 16 ... -
New Functions for Sinclair BasicA total of 52 new functions can be added to Sinclair BASIC; 26 numeric functions (A-Z) and 26 string functions (A$-Z$). Owing to the internal structu…
...
[code]
[i]hex4$[/i] = 4 digit hex string ("0000"-"FFFF ... [i]string2[/i] = 2 character string
[/code]
[b]AND ... [b]BIN[/b]([i]string[/i])
[code]
DEF FN B ... [b]LEFT$[/b]([i]string,number[/i])
[code]
DEF FN ... -
Andromeda Inc.Since there was a thread in the games section about Tarantula, I made a search and found the game [URL="http://www.worldofspectrum.org/infoseekid.cgi…
... bit different, but checking the code of both games, I think ... (LEN STR$ Y TO)
[/code]
in Aracnidos, and ... (LEN STR$ Y TO)
[/code]
in Tarantulas. The ... sense alone without its previous control code, and produces ugly ? signs ... -
trying to read keyboardI have the speccy in interrupt mode 1 I used 'IM1' in assembly language then Im printing the contents of memoryu area 23560 to the screen: [quote] l…
... />
ld a,#22 ; ASCII control code for AT.
rst #16 ... -
z80 assembly helpEver since I was a child I wanted to program my zx81 then my zx spectrum + 2. However, it was such a mystical beast and I only ever used BASIC not kn…
... I understand exactly what the code is doing.
code is as follows
... /> ld a,32 ; ASCII code for space.
rst 16 ... setxy ld a,22 ; ASCII control code for AT.
rst 16 ... -
CAPS-SHIFT KeyCodeIs there a standard Keycode for CAPS-SHIFT Key ? Looking at the ROM documentation in the Main key table KEYTABLE_A, there is no Entry for CAPS_SHI…
... ever be assigned a key code.
[code]035A BIT 3,(IY ... then return with the 'main code'.[/code]
I also checked ... /> SYMBOL-SHIFT is mapped to control code 14 = 0x0E, in [b]KEYTABLE_A ...
