-
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 …
... stop the game with DI/HALT and look at the stack ... -
RAND USR that doesn't work in emulators and clonesEons ago, I "discovered" a strange RANDOMIZE USR. This is it: [b]RANDOMIZE USR 46578[/b] Using it on a genuine ZX Spectrum rubber key or Plus model,…
... CPU is locked using DI / HALT. If I press the reset ... the last instruction before the HALT, SP is set to BBBBh ... -
Definitive list of games incompatible with +2A/+3 and of compatible versions (if any)I am trying to compile the definitive list of games which are incompatible with the +2A and the +3 and of their compatible versions, if they are pres…
... upon loading the system will halt to a black screen - thus ... -
RAND USR that doesn't work in emulators and clonesEons ago, I "discovered" a strange RANDOMIZE USR. This is it: [b]RANDOMIZE USR 46578[/b] Using it on a genuine ZX Spectrum rubber key or Plus model,…
... RESET. So, every time the HALT instruction is executed (at the ... of the program), the corresponding HALT line is asserted, causing a ... RESET is asserted and the HALT condition is exited, the CPU ... 0000? The instruction inmediately following HALT is PUSH DE, so if ... -
GUI/OS for the Spectrum?Hi, Is anybody working on a WIMP/GUI system for the Spec? Is there anything current out there? [url]http://snakeoillabs.com/wordpress/2005/10/30/8…
... a port immediately after a HALT (since the ULA will be ... read is done after a HALT. -
Definitive list of games incompatible with +2A/+3 and of compatible versions (if any)I am trying to compile the definitive list of games which are incompatible with the +2A and the +3 and of their compatible versions, if they are pres…
... works, they cause a system halt or reset upon loading, apart ... -
GUI/OS for the Spectrum?Hi, Is anybody working on a WIMP/GUI system for the Spec? Is there anything current out there? [url]http://snakeoillabs.com/wordpress/2005/10/30/8…
... enable interrupt
;and use HALT
;After return BC=0 ... MA/SL
ei
halt
ld bc,$FADF
MicroSpeech Entry PointsHello Hardware Guys, Do any of you have any information regarding the MicroSpeech ROM. In particular: 1) Do you know what addressess cause it to p…
... /out toggles on executing the opcode at 0038h.
When the ... 's possible that executing the opcode at 1000h when paged in ...MicroSpeech Entry PointsHello Hardware Guys, Do any of you have any information regarding the MicroSpeech ROM. In particular: 1) Do you know what addressess cause it to p…
... /out toggles on executing the opcode at 0038h.
When the ... 's possible that executing the opcode at 1000h when paged in ...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…
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…
... exceed the side of the opcode it wants to generate.[/QUOTE ...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…
... bit array) and the executed opcode (in mnemonic form, unless you ... Master at reading hex/decimal opcode values) every time you execute ... , you can trace execution opcode by opcode and see where it diverges ...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…
[QUOTE=Arjun;546292]unless you're a Jedi Master at reading hex/decimal opcode values[/QUOTE]
Like Woody...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…
... solution:
#931f: ei
halt
ld bc,0320
HALT bug is vanished.
But ...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…
... solution:
#931f: ei
halt
ld bc,0320
HALT bug is vanished.
But ...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…
... value (A) to the OUT opcode, which then sends that value ...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…
... value (A) to the OUT opcode, which then sends that value ...RAND USR that doesn't work in emulators and clonesEons ago, I "discovered" a strange RANDOMIZE USR. This is it: [b]RANDOMIZE USR 46578[/b] Using it on a genuine ZX Spectrum rubber key or Plus model,…
... PUSH DE, isn't the HALT instruction spread over two M ... cycles so that in reality /HALT is only asserted in T2 ... it on real hardware and /HALT goes low just after the ... the clock in T4 of HALT's M1 cycle.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…
1st thing to mention is LD HL,DE is not an opcode.
You need to use either
LD H,D
LD L,E
or
PUSH DE
POP HLMove 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…
... HL,DE is not an opcode.
You need to ...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…
... - (n = number) is not an opcode either, you need to use ...SobNot many things make me feel helpless but today did :( My 10yr old had been out playing for around half an hour. There's a knock on my door, and th…
... !
I came to a halt four or five inches from ...ZX Spectrum 48K clone and test resultsHi! This is my first post, so, first of all, I'd like to say hello to the whole community! I am Alessandro Dorigatti from Italy and I'm developing …
IRContention is likely running fine for you. See the notes about the undocumented OUT (C),0 opcode [URL="http://www.z80.info/z80sean.txt"]here[/URL]. If your CPU was outputting 255 then you'd have the white border and a low beeper tone :)ZX Spectrum 48K clone and test resultsHi! This is my first post, so, first of all, I'd like to say hello to the whole community! I am Alessandro Dorigatti from Italy and I'm developing …
... the undocumented OUT (C),0 opcode [URL="http://www.z80.info ... for the OUT (C),0 opcode.
So, I can ...ZX Spectrum 48K clone and test resultsHi! This is my first post, so, first of all, I'd like to say hello to the whole community! I am Alessandro Dorigatti from Italy and I'm developing …
... the undocumented OUT (C),0 opcode [URL="http://www.z80.info ...Next Beeper music compo[B]Dihalt demoparty open air - 23-24 Jule 2011[/B] [QUOTE]ZX Spectrum Beeper Music Musics can be made with any Beeper editor (ZX-Spectrum or PC). M…
maybe i can fix up some unfinished stuff. btw now i rememer it was chaos constructions where emulator was used for playback. my apologies to d!halt teamwriting 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…
... 's test suite exercises every opcode (often more than once), so ...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…
... 's test suite exercises every opcode (often more than once), so ...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…
... of DAA tests) and 76 (HALT), but I don't really ... implementation is correct. As for HALT instruction, I simply don't ...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…
... of DAA tests) and 76 (HALT), but I don't really ... implementation is correct. As for HALT instruction, I simply don't ...
