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ZX-Assembler in progress...Dear readers, I just want to announce that ZX-Assembler is not longer only an idea in my mind. It's just alive. Unfortunately, it's too early to mak…
... to the middle of a ROM routine like address $0e9e (that ... config file to specify that routine starting at address 53200 ... label "print_tile", with comment "routine to print tile to screen ... label "print_tile"
53200: comment "routine to print tile to screen ... -
Some thoughs about fast scrolling on 128 modelPlease, consider this article as technically interesting concept not a proven algorithm. ONE The fastest scrollers use long sequence of PUSH inst…
... ?..
Does reusing/calling ROM procedures in general constitute a ... saying that I never used ROM routine; I did and I continue ... , a new open-source alternative ROM - well, my code is ... solution compared to using a ROM routine in general. Any major update ... -
CODE SCREEN$ in MCIs there any way of determining what character is displayed at a certain co-ordinate from machine code like the 'IF CODE SCREEN$=' arrangement in bas…
Anyone know where I would find the ROM routine for that function and how would I go about using it? -
CODE SCREEN$ in MCIs there any way of determining what character is displayed at a certain co-ordinate from machine code like the 'IF CODE SCREEN$=' arrangement in bas…
You could look at the ROM disassembly book (Melbourne House I ... where you drew it. The ROM routine is going to be slow ... -
CODE SCREEN$ in MCIs there any way of determining what character is displayed at a certain co-ordinate from machine code like the 'IF CODE SCREEN$=' arrangement in bas…
... you may call to the ROM routine (PASMO assembler):
[ ... proc
call S_SCRNS_BC ;SCREEN$ routine
call STK_FETCH ;fetch string ... the CHARS system variable, this routine will return 0. This ... -
Struggling with this routine... Any ideas?I'm trying to write a routine that plots 3 pixels to decrease the energy bar in the top right corner by 5 units, but it just wont have it! There mus…
Ewww. Calling the ROM routine to plot a pixel? WTFingF?< ... -
Where do you stick the stack?...OK, so I've got a fair chunk of ASM code assembled from 24000 mark. The stack shouldn't get very big, just a few PUSHes and POPs of the main regis…
... , if required, without using the ROM routine. One of these days I ... -
C.G.D - Classic Game Designer[b]UPDATE: August 07, 2013 AN UPDATED VERSION OF CGD IS NOW AVAILABLE, DETAILS HERE: [url]http://www.worldofspectrum.org/forums/showpost.php?p=7155…
... , that's it. The only ROM routine I'm using is the ... -
Experimenting with turboloadersHello, My first post, having lurked here for a while. I'm a lifelong computer nerd, Spectrum fan since childhood in the eighties, and have recently…
... said that, practically every loading routine that I've seen on ... speccy is derived from the ROM routine in some way. If you ... -
Confounded DEF FNCan anyone see why this is going wrong? I've been tinkering with it since tea time and got nowhere. [code] 2 DEF FN t$(n,t,d) =STR$ INT (n/t)…
To Crisis.
The ROM routine dealing with quotes is $25B3 ... -
30-column 8x2 multicolor (even in 48K)I don't recall any 8x2 multicolor routine for 30 columns that would work on all Spectrum models (including the Spectrum 48K), so I decided to write i…
... occur, which means the Speccy ROM routine kicks in first, which means ... -
30-column 8x2 multicolor (even in 48K)I don't recall any 8x2 multicolor routine for 30 columns that would work on all Spectrum models (including the Spectrum 48K), so I decided to write i…
... occur, which means the Speccy ROM routine kicks in first, which means ... -
Experimenting with turboloadersHello, My first post, having lurked here for a while. I'm a lifelong computer nerd, Spectrum fan since childhood in the eighties, and have recently…
... a loader - a ROM routine loader (for emulators with ROM traps), a magnetic ... of variations on the the ROM tape routine. If you have problems ... -
Experimenting with turboloadersHello, My first post, having lurked here for a while. I'm a lifelong computer nerd, Spectrum fan since childhood in the eighties, and have recently…
... loaders are variations on the ROM loader.
Looking at ... Del Crimen). The generic "like ROM routine" picks up everything else.
What would be the simplest tape loading routine?I'm searching for some small assembly snippet I can use to load a (headerless or not) block from tape into RAM I can embed in my C games to load furt…
[code]
ld ix,start
ld de,length
scf
ld a,255
jp #556
[/code]
Start, length headerless dataload and return to basic
For your own striping, copy the ROM routine and alter the IN/OUT-commandsWhat would be the simplest tape loading routine?I'm searching for some small assembly snippet I can use to load a (headerless or not) block from tape into RAM I can embed in my C games to load furt…
... your own striping, copy the ROM routine and alter the IN/OUT ...What would be the simplest tape loading routine?I'm searching for some small assembly snippet I can use to load a (headerless or not) block from tape into RAM I can embed in my C games to load furt…
I understand the benefits on using the original ROM routine but... ?wouldn't that render my game unplayable in anything which a different ROM? For example, does SE Basic have the same entry points?What would be the simplest tape loading routine?I'm searching for some small assembly snippet I can use to load a (headerless or not) block from tape into RAM I can embed in my C games to load furt…
... know I could use the ROM routine (It would suffice, any pointers ... /> .[/QUOTE]
Use the ROM routine. Then your multi loader will ...What would be the simplest tape loading routine?I'm searching for some small assembly snippet I can use to load a (headerless or not) block from tape into RAM I can embed in my C games to load furt…
... your own striping, copy the ROM routine and alter the IN/OUT ...display file addressing; screen slicingWhile working on this Compendium I'm updating or rewriting a lot of stuff. One thing I eventually came to appreciate was the simple & clever way in w…
... speed penalty for using the ROM routine every time it branches to ...Issue 3 board with strange piggy-back boardIn case you are interested. I?ve never seen something like this before. I have an Issue 3 board here. When I opened the case and found a strange pig…
... any interest to check the ROM routine that the Spectrum is using ... 'll need to check the ROM disassembly and get back to ... interface could (conceivably) have a ROM extension that would set the ... 'll have to check the ROM disassembly and see if that ...Using +3e ROMs without physically replacing internal ROM chips?Is there any external hardware available which can logically replace the internal ROMs of a +3 with, e.g. the +3e ROMs, *without* having to open up a…
... flash programming tool as a ROM. I have been known to ... can run an external speccy ROM, or load snapshots. The other way ... way when I updated the rom image because although the chips ...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…
... />
A few ROM routines will work if called ... a summary of the ROM routines and how to ... globalnet.co.uk/~jg27paw4/pourri/rom-routines.txt[/url]
... 're calling your own routine which can manage the ... you're calling a ROM routine which takes parameters off ...CIRCLEHi, I'd like to draw a circle x,y,r using the BASIC-ROM subroutines. I've put x, y and r onto the calculator stack and used CALL #232D and RET. I g…
... routine once which was fairly fast but cheats and uses the ROM ... /> with small radiuses as the ROM routine did a much better job ... CRGRE1
; Use slow ROM routine circle routine
; for circles with ... Pile as it uses the ROM PLOTSUB
rather than ...Help needed with calculating screen addressesCan anyone help me finally crack Jonathan Cauldwell's screen addressing calculator and, more to the point, is the reason I'm struggling because this …
... .
There is no ROM routine to reverse the procedure, but ... work to derive a reverse routine based upon that.Help needed with calculating screen addressesCan anyone help me finally crack Jonathan Cauldwell's screen addressing calculator and, more to the point, is the reason I'm struggling because this …
... great, but is there a ROM routine to also go the other ...FUSE serial communication sample anyone?Hi, in [URL="http://manpages.ubuntu.com/manpages/precise/man1/fuse.1.html"]FUSE man pages[/URL] one finds switches for serial comms. By using --inte…
... spectrum, using IY when rom routines run can be a ... problem. The rom tends to use IY to ... change IY, suddenly the rom routines are indexing into some ... stack frame which means the ROM routine may have been reading ... t know if the IF1 rom changes IX anywhere; I ...TAP version of CrosswizeIs it possible to create a TAP version of Crosswize with all levels? On the tape or a TZX file, the levels are in the same block and a custom loader …
... size don't use the ROM to load levels (but a modified ... RAM), so divide won't load the levels (unless you patch ... a single patch to use ROM load routines won't work.
load routines are placed above 49152 ...Change PAPER and BORDER colours from machine codeHow do you go about changing PAPER and BORDER colours from machine code? I've forgotten the system variables for border and paper.
... sockets.
The loading routine sets the border colour directly ... copy of it from the ROM and change the colours in ... code, then jump into the ROM routine, and the border will just ... at writing your own PRINT routine, to give yourself for example ...
