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<1…567891011…34>
  • Interface One - New FunctionalityAs you may (or may not) be aware the Interface One is a pretty powerful piece of kit. One of it's greatest features is being able to easily extended …

    ... for reading of a hex address, and maybe a DPOKE of ... flags nicely for the final variable allocation.

    Thanks for ...
    RST#08 RST#08 July 2009 Development
  • z80 program to BASIN?I have a BASIC program with UDG:s loaded in a z80 snapshot file. I would like to edit the program with Basin, but I wonder what must be done before…

    ... 65368. I guess that memory address would be interchangable with the ... , perhaps by changing some system variable?

    I seem to ...
    Rickard Rickard September 2009 Sinclair Basic
  • z80 program to BASIN?I have a BASIC program with UDG:s loaded in a z80 snapshot file. I would like to edit the program with Basin, but I wonder what must be done before…

    ... 65368. I guess that memory address would be interchangable with the ... , perhaps by changing some system variable?
    [/quote]

    ... (23606/7). It contains the address of the character set, minus ... your character set at that address. The format is the ...
    Dunny Dunny September 2009 Sinclair Basic
  • z80 program to BASIN?I have a BASIC program with UDG:s loaded in a z80 snapshot file. I would like to edit the program with Basin, but I wonder what must be done before…

    ... that USR "A" returns the address of the UDG variable?
    Rickard Rickard September 2009 Sinclair Basic
  • z80 program to BASIN?I have a BASIC program with UDG:s loaded in a z80 snapshot file. I would like to edit the program with Basin, but I wonder what must be done before…

    ... USR "A" returns the address of the UDG variable?[/QUOTE]

    address is the same as for ...
    Dunny Dunny September 2009 Sinclair Basic
  • Jumping to BASIC after importing 23296,1703Sorry for the confusing title. :-D Now that I've learned how to stop a game from starting after loading (in Fuse and Specemu), I have a few more que…

    ... the stack and ERR_SP system variable before jumping to the BASIC ... hl
    ld hl, 4867 ; address of MAIN-4 in ROM ... return here
    jp 7030 ; address of STMT-RET in ROM ...
    Marko Marko September 2009 Sinclair Miscellaneous
  • POKING graphicsI remember using binary code (in BASIC) to POKE graphics (thanks Input magazine!) Using a FOR..NEXT loop you would POKE each square in the 8X8 charac…

    ... POKE the system variable that holds the base address of the UDGs ... trick with the 'CHARS' system variable, which allows you to customise ...
    gasman gasman November 2009 Games
  • When would you use LD A,R ?Can anyone tell me a practical use of LD A,R and LD R,A I am confused when you would need to use it? Cheers

    ... , time, randomness and MAC address to generate unique ID's ... thing by using the MAC address combined with the time ... ; 16 bits derived from MAC address + noise
    LD A, ... there operations that take a variable length of time for the ...
    csmith csmith November 2009 Development
  • Memory concerns with z88dkI've retaken my old spectrum project and sadly I've reached a dead end very fast. I'll try to explain my worst problem in a few lines. I'm not a vet…

    ... to which is stored in variable 's' above) and 9 ... ram into the top 16k (address $c000 - $ffff). If ... are assuming is located below address $c000. We can make ... is compiling beginning at address 32768 and the isr ... (because it's below address $c000) but the z80 ...
    Alcoholics Anonymous Alcoholics Anonymous December 2009 Development
  • Dim commandI try o find a BASIC COMPILER for ZX SPECTRUM 128 that use DIM command with two or more letter as 10 DIM AB(10) instead of 10 DIM A(10) Any iforma…

    ... . If you don't specify variable types, it will do what ... the compiler what type the variable is means it can generate ... the VARinfo to the right address.
    Then a new ZX ...
    Alcoholics Anonymous Alcoholics Anonymous December 2009 Sinclair Basic
  • How do I know where my C compiler is putting my variable?Let me show you my code. I am writing a Z80 emulator (z80.c) which sets up a bit of shared memory for communication with another process. Well, I got…

    ... byte, assigned to be the address of your shared memory block ... ]z80.c[/i], change the variable from [b]byte bl_ctrl;[/b ...
    obo obo December 2009 Chit chat
  • How do I know where my C compiler is putting my variable?Let me show you my code. I am writing a Z80 emulator (z80.c) which sets up a bit of shared memory for communication with another process. Well, I got…

    ... byte, assigned to be the address of your shared memory block ... ]z80.c[/i], change the variable from [b]byte bl_ctrl;[/b ... ]

    Right, so the variable will be pointing to the ...
    wilsonsamm wilsonsamm December 2009 Chit chat
  • How do I know where my C compiler is putting my variable?Let me show you my code. I am writing a Z80 emulator (z80.c) which sets up a bit of shared memory for communication with another process. Well, I got…

    ... the same memory space. A variable value changed by one thread ... pointer is an address in the local address space that has been ... memory may use a different address (pointer value) to refer to ... the same block. The local address is what shmat returns. This ...
    Alcoholics Anonymous Alcoholics Anonymous December 2009 Chit chat
  • Anybody got a hack for PAW'd games?Has anybody got a hack to browse the text in PAW'd games?

    ... , is etc.) The token table address is held in the same ... LET x=41560: REM PUT ADDRESS TO SEARCH FROM HERE
    variable length table. Maybe you can ... />
    ld hl,40000 ;put address to search from here
    Bandit Bandit January 2010 Sinclair Miscellaneous
  • Why did Ultimate games load like this?What I remember about the early Ultimate games was the unusual way they loaded. You'd get the BASIC bootstrap loader, then a SCREEN$, then a main bl…

    ... />
    23728 is the NMIADD variable. It is often said that ... the 48K ROM made this variable useless. Maybe Ultimate assumed this ... byte LOADed in at this address contains a JP (HL) instruction ... . This address is called all throughout the ...
    Jimmy Jimmy February 2010 Games
  • Speccy games programmingI've got a question. Where games written in pure machine code or was it a level higher with Assembly language being the choice? I always thought it…

    ... it's function name and variable names. Sometimes guessing works , sometimes ... there are raw display file address calculators that can be found ...
    Alcoholics Anonymous Alcoholics Anonymous February 2010 Games
  • A.I. in a Pacman game made in BasicA few years ago I tried to make my own Pacman game in Sinclair Basic. The map, UDGs and the whole game was completed and was working with just one gh…

    ... messing around with the systerm variable that tells the speccy where ... (can't remember name or address of the sys var). Moving ... the address down a byte shifts all ...
    Paradigm Shifter Paradigm Shifter February 2010 Sinclair Basic
  • Problem with Spin 0.7s +3 file I/OI'm currently trying the +3 disk functions in z88dk. I've based my work upon the simple snippet Winston posted a while ago, but doing the contrary. H…

    ... is the correct address to the system variable used to keep track ...
    na_th_an na_th_an March 2010 Emulators
  • Problem with Spin 0.7s +3 file I/OI'm currently trying the +3 disk functions in z88dk. I've based my work upon the simple snippet Winston posted a while ago, but doing the contrary. H…

    ... is the correct address to the system variable used to keep track ... to port $1ffd. The system variable at $5b67 needs to be ...
    Alcoholics Anonymous Alcoholics Anonymous March 2010 Emulators
  • JSpeccy: New emulatorHi there, Jos? Luis S?nchez (zx81 at ono dot com) has developed a new ZX Spectrum emulator in Java, with a very accurate Z80 emulation. The message …

    ... to it having 24 bit address space and using a 32bit ... of the classes a paused variable was being used across threads ...
    brownb2 brownb2 March 2010 Emulators
  • My first platformerHi all! How do you do? Been lurking here for a while, but never had the courage to join the forum. :) The Speccy was my first computer, so I've alw…

    ... BEEP routines read the system variable BORDCR.

    Also if ... *b) into the BORDCR system variable
    *(unsigned char *)23624=b
    Alcoholics Anonymous Alcoholics Anonymous March 2010 Development
  • Arcade Game Designer 2.0 releasedI know dozens of you downloaded the previous version of AGD. Well, you can put it away now because I've made some major improvements to that version…

    ... put the address of the score string into BASIC variable A. At ...
    jonathan jonathan April 2010 Development
  • Arcade Game Designer 2.0 releasedI know dozens of you downloaded the previous version of AGD. Well, you can put it away now because I've made some major improvements to that version…

    ... put the address of the score string into BASIC variable A. At ...
    BiNMaN BiNMaN April 2010 Development
  • Static vs stacked local variables in z88dkHello everyone. I'm doing a program for Spectrum 48KB with z88dk v1.8 (XX Mar 2008), and I eventually discovered that if your local variables in fun…

    ... . To randomly access a variable on the stack, the ... = 16-bit local int at address stack + 2

    variable. That's 8 bytes ... to compute the address of a local variable like this:
    variable access. Even so it ...
    Alcoholics Anonymous Alcoholics Anonymous April 2010 Development
  • Obtuse One-LinerFollowing a request in another thread, this could almost be crammed into one line. It uses a simple ON ERR CONTINUE to give a continuous display. [c…

    ... normally points to the first address on the stack which is ... low byte of the system variable is altered.

    I ...
    Geoff Geoff May 2010 Sinclair Basic
  • +3 how to detect if a file exist ?Need help. I am making a generic menu to my compilations over the spectrum +3. Exist some way programatically to detect if some file exists on the d…

    ... /> Basically, i didnt change the address of the filename in the ... of
    ;the BANKM system variable up to date with the ... , 32765 ;Load BC with the address of the paging port. 7FFD ... )
    48928 LD HL,28659 ;Address of the filename (Note, this ...
    spodula spodula May 2010 Sinclair Basic
  • Hi Res Print Routine neededHas anyone seen code for a print routine with pixel accuracy? That is print(y,x,CHAR) that allows 0 < y < 192 and 0 < x < 255 - that takes a charact…

    ... /> ;print_char ld de,(23606) [System Variable holding Display Characters]
    ; ld ... values to the correct Screen Address - Address in DE
    ld a ... off Counter, Address of Character Data, Screen Address, Screen Address
    ld a ...
    Turkwel Turkwel June 2010 Development
  • 'Hello World' in ASM ?Can someone show how to make the classic 'Hello World' print with ASM code ? I cant figure at this moment how to insert and handle strings with the s…

    ... tells you about a system variable (which is actually just a ... CHARS".

    [quote]CHARS, address 23606/7.
    256 less ... that starting offset, counting from address (60*256) instead of ... ; On entry:
    ;
    ; BC = address of the string
    ; D ...
    ajmoss ajmoss June 2010 Sinclair Basic
  • Arrays in asm ?Just following the idea to make the menu entirely in asm, how can i handle arrays in asm to store the each game loader to be loaded ? thx in advance

    ... your strings may have a variable length. For example, you may ... a fit". They are of variable length, so you may want ... 00:

    [code]
    Address Contents
    0x8000 0x8006
    address here is 0x8000

    Winston Winston June 2010 Sinclair Basic
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