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Codies help? Werewolves of LondonHi All, never one for shying away from the deep end, having only just dipped my toe in to the world of machine code I find myself trying to find out …
... Code in the ROM area is an opportunity for using somebody ... routine for menus.
These days the ROM is essential for ... Then the interrupt service routine for up to 6 peripherals can ... the routine would seem to operate normally under for some more ... -
How to speed up TZX loading (emu development)With many newer emulators there are options to do faster loading schemes, even for turbo-loader or protected loader blocks in TZX files. For example,…
... a ROM loader, Bleepload, Speedlocks of various flavours, alkatraz etc. For each ... a particularly funky keyboard reading routine.
This ... loaders with one intelligent routine. If I can get ... you'll need one routine for each loader so it gets ... -
Extracting the Multiface ROM?Is there an easy way to save the contents of a real Multiface 128 ROM to tape, on a real spectrum, for the purposes of transferring it to PC for emul…
... to this particular ROM.
For the +D enabled ... routine to do some work for you. Page in the MF128 ROM ... routine for you.
If the above routine just gives standard ROM ... code, try IN 191 to page the ROM ... -
compilerI am currently developing a sudoku game for the old faithful speccy. My idea is to write the code in basic and then compile it to m/c because i suck …
... currently developing a sudoku game for the old faithful speccy. My ... out, probably every compiler uses ROM routine
well, you could ... /> (or do better its implemantation, FOR is slower then IF loop ... , not a formule 1 (massive ROM calling) -
Calling ROM routinesFirstly, sorry if this is the wrong forum to post this in, but I wasn?t quite sure under which heading is best fitted. I?m trying to figure out how…
... how to invoke the LOOKVAR ROM routine to discover where a variable ... . Could some kind person clarify for me?
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for. -
TAP conversion project?I was wondering if there's any concerted effort to produce TAP versions of games only available in TZX or Z80/SNA/SLT format? Or are snapshots consid…
... code blocks" format (create headers for everything, then load the now ... confident about hacking the multiload routine to use headered files. ... multiload seems to use the ROM routine LD-BYTES to load the ... that counts as a ROM loader (for the purposes of running ... -
RAM chips are 4164s and 4564s interchangeableI paid for some 4164s online, for upgrading my Spectrum 16K to 48K, and I've been given 4564s. I've tried these along with the correct logic ICs and …
... to avoid their 157's for use in the Spectrum.
for the Spectrum to tell you ... still have bad RAM. The ROM routine to check RAM doesn't ... -
The 128 plus 2 wasn't very goodHaving looked at the review in issue 33 of Crash of the Spectrum Plus 2, it strikes me as a bit odd, as if Simon Goodwin had to like it. I remember r…
... will disable the internal ROM. This was used for the IF2 cartridge ... think the 48k's ROM with single key entry (there was a ... have looked at hardware scrolling for sure, maybe hardware sprites ( ... know the final sales figures for the Speccy?[/QUOTE]
< ... -
The 128 plus 2 wasn't very goodHaving looked at the review in issue 33 of Crash of the Spectrum Plus 2, it strikes me as a bit odd, as if Simon Goodwin had to like it. I remember r…
... will disable the internal ROM. This was used for the IF2 cartridge ... preset pallettes and color artifacting for hi-res. Anything that ... think the 48k's ROM with single key entry (there was a ... have looked at hardware scrolling for sure, maybe hardware sprites ( ... -
Help where do i startIm thinking of writing a game or two for the speccy. At the moment Im not sure what type. But Im after some general info. I know laguages like Basi…
... Some technical references on the rom calls and screen map, ... and oh yes an idea for a game.[/QUOTE]
... onwards to get a feel for it.
... contained an assembly language routine for locating the first byte ... It's a useful routine to understand to know ... -
Sam coup? - some questionsHi everyone. Got myself a sam coupé without any kind of cables. I was a bit suspicious about it's working condition. Hooked it to a pc at psu a…
[QUOTE=CKay]Thanks for info, I remember looking at ... there any routine`s that you`d recommend rewriting for an initial ... a simple scroller using the ROM routines for placing characters and rolling ... another scroller but not using ROM routines, writing all my own ... -
Help understanding some z80 asmI'm trying to work out how to represent the structure of a "sprite" in the SAM as "Grabbed" by SmallC. I can see the assembler implementation but I …
... . So my take is that for blitting I probably need to ... rom routine to blit it into the screen area.
So for ... them onto screen using that rom routine, then load in the next ... using my existing software blit routine.
Anyone got any ... -
Aggravating problem with screensI've rewritten my Sam C runtime emulator code ( well almost ) to allow me to use my own routines for blitting sprites onto the screen, storing tiles …
... can do through calling a ROM routine. That is fine and ... page in of data for another room - for example ) and any ... copy of memory allocated for sprite data is going ... />
3. Call the rom to page (1/2) into ... to be present paged in for the z80?
Monitor/debugger that doesn't use the Speccy ROM?Was there ever a Spectrum monitor/debugger released that didn't use the ROM, for key input and character output routines? The reason I ask is that i…
... didn't use the ROM, for key input and character output ... would be really handy for debugging ResiDOS, which runs ... the standard RST 10 for character output, but maybe ... mega-popular Russian one, for example) I haven't ... also not use the ROM routines since they are ...Cybernoid editorSo, my long tern goal is to make my own Cybernoid or Rex like game (see an ancient thread about Sprite advice)...but my skills are somewhat lacking..…
... is mace. Up above the routine for the table there is a ... How do you specify the routine to jump to on pickup ... for the pickups? How to make the cargo item #02 the key ... item up. Just pretend the key is your "plunger type ... when an alien drops a key you pick it up ...Getting scr addresses from x and yCould someone please tell me how to calculate the 8 screen addresses corresponding to a character printed in basic at coordinates x and y? For examp…
... ;176748]Is there not a ROM routine that already does exactly this ... />
There isn't a ROM routine that does exactly that but ... happy to code one up for you guys if you want ...Total amount of memory on a Speccy ?I wonder............ The C64 (excuse me for saying that name in here. I'll hereby name it just "it") has 64k, while only 38k, or so, is available f…
... referring to the free memory for use with BASIC.
< ... /> Speccy nowhere writes free RAM for Basic when starts. Even no ... for it in Basic, but must use combination of PEEK and ROM routine ... call for it.
...Adding AY music to your plogramI'd like to add some nice tune to my program written in machine code. I am not new to assembler programming but with music programming I have no expe…
... , your code execution is stopped for a while, but all registers ... the song. So, yes, the ROM routine is totally useless but the ... interrupt routine, but is instead relying on HALT to wait for an ... measure time passed. Much better for a minigame compo as every ...Multiface ResidentI'm thinking about adapting some existing code to be Multiface "resident"... but being perfectly honest I'm not quite sure where to start. Any top t…
... 'in a,(159)'
;For the 'Direct Jump' we must ... . In this case our own routine will
;begin at address ... />
ld hl,9000 ; our routine will start at 9000
routine or copy/modify the ROM routine into the RAM ..."Lost" 48K expansionToday I dug up my Speccy after more than 10yrs of inactivity. I bought it as a 16K in 1983, than I had expanded to 48K and never had problem. Until t…
... 4164 (or similar) chips. A ROM routine tries to determine how much ... why there's 8 chips for lower memory and 8 chips ... for upper memory - each RAM chip ...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…
... mine can't be used for the contest anymore. Oh well ... is a call to the ROM routine that scrolls the screen. It ... the variable that controls the FOR loop to either 0 or ... game:
[CODE]1 FOR f=65368 TO 65431: READ ... 7: CLS : LET x=15: FOR f=0 TO 1:
How do I clear only a specific area of a screen (quickly) in machine code ?I'm looking for a machine code routine which will clear the first 20 rows of the Spectrum's display (or any number of rows or columns) . I have found…
... in HL
2) Repeat for the number of lines to ... row/column character
; The ROM routine gets the line start from ...Using a multiface to exit to BasicBack in the days I was always fascinated with the idea of getting access to BASIC listings inside a program or game. I was able to work a way around …
... of the number that the ROM uses for calculations. The line 2 ... such a line, the internal ROM representation is removed and recalculated ... point to an anti-hack routine in your code, thus baffling ...
000
[/code]For example, 1000 is represented as ...A few questions about machine codeOh no... another noob. I'm giving my first steps in assembler (finally, after 20 years stuck in BASIC). I read a SU article explaining that if I wan…
... I call a routine from the spectrum rom, because it ... to be used for something, and not others. For example:
for a certain purpose for a certain ... Every time you call a ROM routine, you can't be ... you call the load-bytes routine.
...Question on Z80 R/W cycles.Snipped from the complete spectrum ROM disassembly: [CODE] Now the memory is checked. 11DA RAM-CHECK LD H,D Transfer the value…
... a brief test - testing merely for the presence of memory could ... more economically than the actual ROM routine. I'm sure the guy ... get 0xFF instead. The Spectrum routine as it stands does a ... just fine in a test routine, but bits are found to ...Poke 23739,111So, I'm looking at some of my old loaders (BASIC stuff) to work out how I got the display to not corrupt on loading code. It's the old POKE 23739,111…
... the PRINT-A routine in the ROM (that's where ... the current channels print routine (yes, the address ... address of the print routine for the selected channel, and ... the current channels print routine at a RET instruction. ... find the address in ROM to print there, and ...Your help needed![FONT=Arial]there are [URL="http://www.worldofspectrum.org/neededscreens.html"]a number of titles[/URL] (146) that still lack an in-game scre…
... Question Creator
Beta ROM
Beta ROM 2
Speech
ROM routine to save a file).
for this program, I'm not ... believe, this program provides support for a 512x192 display mode. These ...Best loading on a gameFor me, it has to be Technician Ted, with all those TT's walking across the screen. 2nd comes Skooldaze, only because I spent many MANY of my evenin…
... mark.
The ROM load/save routine for both leader and colour ... , only defines one colour (red for ... leader, blue for data) and the second ...Channel redirectionHi! I need help regarding the following problem. I want a BASIC decoder running on Spectrum, written in assembler. I found the great *LIST routine […
... using the PO_SEARCH ($0C41) ROM routine to search for the BASIC token ASCII ... So, in my custom output routine for channel 3 I print each ... (floating point) number printing routine in ROM (used by the *LIST ... routine) is really useful and ...Dangerous Z80 Assembly CommandHave been reading Toni Bakers' "Mastering MC On Ya Speccy" book and came across the list of Z80 commands in the dictionary section. Page 102 "[b]IM…
... was jumping into the #0038 routine, but now I will call ...
The ROM routine will re-enable interrupts for you. This way ... ROM's ei and your di back in your im 2 routine ...
