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RealspectrumCan anyone tell me why sometimes when I launch realspectrum it locks up on the welcome screen? I am running it in a DOS shell within windows 98. I'm …
... Woody said, you need to test using the sound muted (latest ... 's a very fast asm routine. Also, do *not* use bilinear ... -
RealspectrumCan anyone tell me why sometimes when I launch realspectrum it locks up on the welcome screen? I am running it in a DOS shell within windows 98. I'm …
... , and I need you to test this before I mark it ... fixed. I've developed a routine that synchs the emulation using ... -
BASIC-code challengeFor the BASIC-coders among us. There is a number that has following aspects. divided by 16 remains 15 divided by 15 remains 14 divided by 14 remain…
... it's this problem might test one's ability to find ... like "write the fastest filling routine for closed shapes" might be ... -
Machine Code ChallengeHere's a challenge for all you Z80 programmers. Points to be awarded for elegance and brevity. (I haven't got the solution either) HL addresses the …
... used IntelObject2tap and R80 to test. I had Out Of memory ... .
RET Z ; Return from routine if B=0.
RET PO ; Return from routine if no reset bits.
RET Z ; Return from routine if B is 0.
Machine Code ChallengeHere's a challenge for all you Z80 programmers. Points to be awarded for elegance and brevity. (I haven't got the solution either) HL addresses the …
... they are there when you test it.
Not all results ... there is no need to test more than two bytes, I ... POKE the test values into 16384 and 16385 ... of the screen, call the routine located at 32768 and then ...Machine Code ChallengeHere's a challenge for all you Z80 programmers. Points to be awarded for elegance and brevity. (I haven't got the solution either) HL addresses the …
... is impressively compact.
The test values that appear earlier in ...
Mikie's compact routine worked first time.Machine Code ChallengeHere's a challenge for all you Z80 programmers. Points to be awarded for elegance and brevity. (I haven't got the solution either) HL addresses the …
... now. Here is some test cases:
Check ... RET Z ; Return from routine if B=0.
... C9 10 RET ; Return from routine.
Machine Code Challenge #1 ResultsWell at the stroke of midnight there were 3 entries so everybody gets to stand on the podium and the 3 Spectrum books will be going out to prizewinn…
... that in version 1 -
Test data is written to sectors ... basis of probabilities Mikie's routine would produce a more generous ...Machine CodeOk i had a spectrum when i was younger and only used it for playin games and typing simple BASIC programs - i mean really simple! Things like 10 Pri…
... a snapshot under the name "TEST" and then I run the ... : try typing the simple PRINT ROUTINE as stated above.Memory usageBrowsing the online documentation for the Spectrum I came across a peculiar discrepency. As we all know the start of the RAM is at 16384 which is whe…
... area for the BIG PRINT routine.
The most obvious ... use the Z80 emulator to test it.Spectrum problemHi I've just been trying to resurrect my 48k spectrum. I'm having some problems loading some of my games, but if it does completely load, it crashe…
... 's / 0's write read test will not pick up - I ... data - and this simple basic routine may just not be complex ...Finding the length of loaded Bytes:Is there a way from BASIC of finding out how big a block of bytes loaded from tape was? i.e. - if you do LOAD""CODE and load in a lump of bytes, ca…
... with one loader and later test whether
it's a ... with 65535 prevents initial byte test. Further the loader will also ... the checksum. I use this routine in my copy-program.More random questionsWay back in the mists of time I remember reading a couple of articles in an ancient copy of Sinclair User, ZX Computing or the like (can't remember w…
... , using numbers and the same routine using those memory saving tricks ... /> 5 REM TEST
1 REM TEST
2 REM TEST
3 ... REM TEST
4 ... REM TEST
5 REM TEST
Anyone for a hacking challenge ?I have to get the DSK version of Tomahawk to work. It uses the well-known Digital Integration "SECURITY CODE" lock just like in Bobsled, ATF, etc. Th…
...
iv) You can now test to see if everything has ... now we need a routine to decrease the number ... then jump to game over routine
LD (40000),A ... of writing this similar routine but this should give ... had found the lives routine whilst hacking as follows ...BASin Release 9a availableJust a quick not to say that an updated (ie, bug fixed) BASin is available. A list of what's new for release 9: Fixed a bug in the line tokeniser th…
... busy with the Interrupt Service Routine at switch on is amazing ... programs I've used to test it but even something like ...i want to start writing my own gamesi want to start writing my own games but have no idea how. is there any downloadable dummys guides or some software that teaches u how. the only expe…
... you need it to test a very simple routine from BASIC, you ...help with sprites from SevenUpHas anybody got source for a short m/c rountine that can send sprites designed in SevenUp to the screen or to a dummy screen? A long time ago, I wor…
... and I'll rip a routine out of one of my ... take your vertical coordinate and test the bits that determine which ...T.I.M. - A New Interlace - Demo for DOWNLOADHere's something that's been in the works for quite a while ( mostly in my head ) and recently I've aquired assistance to help it come to fruition. …
... pretty fast stack based copy routine:
LD SP, HL ... )
and then simply test of adress in HL by ...InterruptsA small piece intended for the FAQ. Comments, corrections, additions welcome. Notably: * How long does the 48K ULA hold /INT low? * What happens i…
... JP to your 'real' interrupt routine. However, this doesn't work ... tstates to reach the interrupt routine:
* M1: 7 tstates ... you have a short interrupt routine, it is possible that the ... was non-zero. Unfortunately, the test was reversed in the ROM ...Collision DetectionHi everyone, This is my first post on WOS. Like most people here I owned a Spectrum when a teenager. At that time I was quite heavily into programmin…
... help.
* Collision Detection Routine: Returns with A holding the ... ) ;X coord of sprite to test for
LD B,A ... ) ;Y coord of sprite to test for
LD B,A ...Interrupts details questionSuppose I am writing a game and I want to use interrupts to measure time, draw the screen without flicker, maybe to poll keyboard etc. What kinds of …
... repeat
; interrupt routine
; it does the same ... a, h
and 8 ; test if we're finished
Anyone know the address mappings...of the hardware resources on the speccy; From the screen display address range to all the hardware control registers. etc. Where can I get access t…
... speed optimisation, it contains a routine for doing sprites from unshifted ... coord of sprite we are test for
;collision with
I would like to write emulatorHi guys, I'm new to this forum but I realise that you must get loads of posts from people asking "how do I write an emulator" so I'll try and be spe…
... the example of Phil's test suite which keeps getting thrown ... it hard to write a routine that can determine if an ...Zecut0r and ZAFA while ago (about 2 yrs)i took VbSpec and tried to port it to Delphi 6. Althought it was pretty weak, it. Meanwhile DelphiSpec 0.1 appeared and i wa…
... /> call 3435 ;"call ZX ROM ROUTINE"
asmend ;"end assembler"
procedure zxbeeper ;"beeper test"
asm ;"asm code"
ROUTINE"
asmend ;"end assembler"
Interesting Custom LoadersHi everyone, I was just thinking about custom loaders on the spectrum and I thought I'd ask you all what you thought was the best one. I'd have to …
... can't test this until I write my custom loading routine, hence ...Compressed Loading ScreensHi everybody From my speccy memories I could swear I could remember games with loading screens that took less than normal time to load. But up until…
... the normal ROM-routine, but there is a test for pressing YRS ...Reading the keyboardDoes anyone have a code sample to read the keyboard in machine code ?
... />
[code]
*-------------------------------------------
* Routine to Scan the Keyboard
test for the particular keys being ...The incredible shrinking screendumpIn this topic I stated that I would be impressed if the screendump could be smaller than 37 bytes. [url="http://www.worldofspectrum.org/forums/viewt…
... /> In the old screendump the test for return is done by ... opportunities for the 33 bytes routine, which would look like this ... I can alter the last test I can skip a JR ...
