-
Storing and displaying attributes...Hi Folks, I have a requirement to store and then redisplay a line of attributes from the screen. For example: 100 DIM a$(1,32) 110 LET line=10 120…
... I effectively have:
[CODE]LOAD UDG Bank 2
LOAD UDG Bank 1[/CODE]
Now this may ... to zero before doing anything else with UDGs.
[CODE]POKE ... ,0
POKE 23564,0[/CODE]
Also, setting S ... -
Frank N SteinThis one > [url]http://www.worldofspectrum.org/infoseekid.cgi?id=0001849[/url] Always seems to crash about level 7 (maybe a bit more) or so with an …
... ]
BTW the startup code is visible as a little ... it by changing attribute to zero (i.e. INK 0, PAPER ... -
Help identifiying a very old gameHello, first post here although I've lurked for a while :) Great site! This is a long shot, but I wonder if anyone can help me find a game I played…
... . Keys are cursor (pity) with zero to fire, nine to bomb ... first time. The compiled machine code graphics are surprisingly smooth, considering ... -
Why doesn't my routine work?I have a "level" defined by 504 bytes (28 squares across x 18 squares down) I'm trying to write a routine that will take an X,Y coordinate in pixels…
... PUSH HL for you.
[code]
; --------------------------------
; THE 'MASKABLE INTERRUPT ... ; Test if the result was zero.
OR L ;
JR ... the third byte.
[/code] -
writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…
... the lower 11 bits (non-zero based index) and see if ... I do. ;)
[CODE]
while(!exit)
{
display_screen();
read_keyboard();
}
[/CODE]
You don't ... . Of course, my current code doesn't look anything like ... -
Games featuring... relevant bugsThere was a recent improvement to the WoS database in order to classify [URL="http://www.worldofspectrum.org/forums/showthread.php?t=34261"]Games fea…
... way as the zero at $77ae :-
[code]
77aa: ld ... ), hl
77b7: jp $77d0[/code]
Fixes:-
[CODE]
77aa: ld a,($caf3 ... original 48K release, except the code was recompiled in order to ... -
Fuse: what do you want to see?An open brainstorm. If you had a team of programmers working on [url=http://fuse-emulator.sf.net/]Fuse[/url], what would you tell them to work on? …
... disabled peripheral has [/i]zero[i] effect on ... 's look at the code:
[code]
CHECK( disciple ... br /> END_CHECK
[/code]
and:
[code]
#define CHECK( ... ...process traps...
}
[/code]
sure, this will slow ... -
Fuse: what do you want to see?An open brainstorm. If you had a team of programmers working on [url=http://fuse-emulator.sf.net/]Fuse[/url], what would you tell them to work on? …
... disabled peripheral has [/i]zero[i] effect on the ... let's look at the code:
[code]
CHECK( disciple ... br /> END_CHECK
[/code]
and:
[code]
#define CHECK( ... /> #define END_CHECK
[/code]
we definitely have some ... -
Fuse: what do you want to see?An open brainstorm. If you had a team of programmers working on [url=http://fuse-emulator.sf.net/]Fuse[/url], what would you tell them to work on? …
... ?
Slightly less than zero :lol:[/QUOTE]
yes, it ... 's not using any GPLed code at all. -
writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…
... some logging routines into your code, so you can trace where ... the code goes off course. Also log ... I wrote a debugger for Zero, I heavily relied on log ... -
Saving and Loading from tape in MC?I'm actually having problems with saving and loading from the ROM routines for the interpreter... I'm currently using the following codes for saving…
... /> [code]
;; LD-BYTES
L0556: INC D ; reset the zero flag ... stack as terminating routine.
[/code]
set registers ... break
[code]
INC D ; reset the zero flag without disturbing ... -
Games featuring... relevant bugsThere was a recent improvement to the WoS database in order to classify [URL="http://www.worldofspectrum.org/forums/showthread.php?t=34261"]Games fea…
... "]here[/URL][/quote]
[code]
d45f: inc (ix+$14 ... /> d46b: jp $9a41[/code]
When code at $d468 runs, crash ... the important thing is to zero the 12th byte in the ... elsewhere such as here:-
[code]
d17b: ld hl, $cbcd ... -
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…
...
;***********************
; Main Code
; **********************
zero out high bit
... br /> ; ---------------------- Start of suggested code -------------------------
ld ... -
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…
... line of code:
[code]
ld ... /> Here is the updated code:
[code]
; **********************
;***********************
; Main Code
; **********************
zero out high bit
... -
The Beatle Quest bugThis may as well be dropped from the "to do" list as I don't think that there's any way to fix it. The "known errors" entry could be updated to inclu…
... />
The original code uses flag 21 for finding ... full of lumps."
[/CODE]
This ... location:
[CODE]
7a18: GET JAR:< ... AT 112
748e: ZERO 21
7491: CREATE 12 ... -
The Beatle Quest bugThis may as well be dropped from the "to do" list as I don't think that there's any way to fix it. The "known errors" entry could be updated to inclu…
... /> 72d8: DESC ;describe
[/CODE]
The entries above ... number of bytes):
[CODE]
SEAR BOAT:
... br /> ATLT 36
ZERO 20 ;flag 20=0?
binutils questionSince there's a few people using binutils these days I thought I'd give it a go and see whether it solves my hunt for a replacement assembler/librari…
...
[quote]
3. Code/Data sections? I can understand ... compiler *should* insert code to zero the uninit section (an ... stuff like this:
[code]
char **strings = {
[quote]
5. Code optimalisation: For the GAC interpreter ...List of existing games that needs a port to zx spectrumPlease post here the games that exist in other platform(s) but does not exist in speccy. Please keep in mind this is not a to-do list, so don't hesti…
... />
I believe Sgt. Helmet Zero is one of the best ... ); it replaced the old Atari code for font handling/scrolling/scaling ... />
NVDI replaces the backend code (such as the AES libraries ... a result of the improved code, much quicker, smoother and ...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…
... including self-modifying code) to reduce code size without loosing ... ; Top row is always zero and not stored (96 ... ;~?
; -----------------------------------------------------------------------------
[/CODE]
In BASIC, type [B ...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…
... ; Top row is always zero and not stored (96 chars ... ;~?
; -----------------------------------------------------------------------------
[/CODE]
Everything still works ... br /> [CODE]SAVE "64#4"CODE 64869,499[/CODE]
To ...Variable resistorI have a problem with my speakers - the treble is much much too quiet in comparison to the bass. Or you could say, the bass is much to loud for the r…
... /> | |
gnd gnd
[/code]
If you have ... and set that equal to zero, then solve for Rv. ...Variable resistorI have a problem with my speakers - the treble is much much too quiet in comparison to the bass. Or you could say, the bass is much to loud for the r…
... /> | |
gnd gnd
[/code]
If you have ... and set that equal to zero, then solve for Rv. ...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…
... ; Top row is always zero and not stored (96 chars ... />
; -----------------------------------------------------------------------------
[/CODE]
This code would be even shorter ... :
[CODE]SAVE "64#4"CODE 64872,496[/CODE]
To ...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…
... the complete source code including this change:
[CODE]
; -----------------------------------------------------------------------------
code accordingly
zero and not stored (96 ...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…
... BASIC, for instance:
[CODE]
10 INPUT "First ... "64-COLUMN DISPLAY DRIVER":
[CODE]
; FAST "COMMA" ( ... "64-COLUMN DISPLAY DRIVER":
[CODE]
; STANDARD "COMMA" (print ... row has changed (reached column zero)
ld a, ( ...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…
... , here's the updated source code:
[CODE]
; -----------------------------------------------------------------------------
; ... if row changed (reached column zero)
; ld a, ( ... ; Top row is always zero and not stored (96 chars ...machine code loadercan someone have a look at this loader and break down what its actually doing and also how i can stop it from executing the 2 loads of headerless blo…
... consisting of $0300 bytes to zero (black ink on black paper ... loads an entire block of code from $5CB6 (the location after ... the start of this machine code.
Since the channel information ... .
Cheers,
[code]
5B00 LD SP,5BFF ...
