-
Character scrollingOk, first I'd like to say that I'm not looking for a complete routine (but that might help) because I am hoping to write it myself and learn a bit mo…
... push/pop? Should I use "halt" or just let it run ... -
Emulator to create log files?Could someone please recommend a Spectrum 128K emulator that can dump the following data to an external text file, while emulating at normal speed? …
... routine and at a single HALT instruction, whose addresses I will ... -
zxs v0.2 releasedI have released v0.2 of zxs if anyone is interested, judging by the response to the first release, I'd say not, but I'm gonna do it anyway!. It has h…
... a breakpoint on a specific opcode.
[URL="http://zxs ... -
Games only possible in 128K mode?In the thread: [url]http://www.worldofspectrum.org/forums/showthread.php?t=30145[/url] the discussion of 128K only games comes up, and it made me w…
... , volume, sound that didn't halt the Spectrum whilst it played ... -
Results of Di:HALT (music/graphic/demo)Official Online Place Score Place Score [ ZX Spectrum AY/YM TurboAY Music ] 1 6.30 2 5.66 adversary - Cj Splinter […
Official Online
Place Score Place Score
[ ZX Spectrum AY/YM TurboAY Music ]
1 6.30 2 5.66 adversary - Cj Splinter [Trinitrocode/DL Corp]
2 5.97 1 5.98 life movement - ... -
Automatic opcode to machine codeHi everyone, Would people use a program that you enter opcodes and it automatically converts them to machine code and saves them to a file. So if yo…
Hi everyone,
Would people use a program that you enter opcodes and it automatically converts them to machine code and saves them to a file.
So if you used it you would type:
LD A,01
LD B,01
ADD A,B
LD B,0< ... -
designing a computerHi everyone! I am designing a 4 bit computer and i need some advice, is this a good instruction set? [CODE] BINARY OPCODE DESCRIPTION 00000 nop…
... ?
[CODE]
BINARY OPCODE DESCRIPTION
00000 nop ... -
Assembly Programming for IDIOTSOk are there any websites guides for what opcodes do in a z80 or books... but for really really thick people like me :-) Something along the lines …
... />
what does HLT do (HALT = Halts the processor )
halt the processor your program would ... -
yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…
... generating dangerous code (such as HALT, IMn, EI, DI). Assembler shall ... -
Help?Hi All, I wonder if anyone has a few minutes to look at this bit of code I'm working on. I'm trying to move to sprites and want to do it with a scr…
... address
inc (hl)
halt ;just so I can see ... what's going on.
halt
ret
sprite ld ... -
Z80 disassembler C/C++ source codeHello, I just thought I might share the [URL="http://zxds.raxoft.cz/docs/z80d.cpp"]source code[/URL] of the Z80 disassembler I have written for [URL…
... the Z80 CPU breaks the opcode sequences into their components.
IM2 calls to player routine on 128k?Hi all, Apologies for being crap, and not even in a funky, skillo kind of way but it's been over 20 years since I last wrote anything in machine cod…
... calling the play routine before halt keeps munging my registers around ...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…
... interpret each value as an opcode or operand?
2 ...AND,XOR,OR,BIT,RES,SET,CPL,NEG,RLC,RRC,SLA,SRL,RL, RR,SRA for BASICAs this was drifting away from the original INKEY$ thread I thought that I'd create a new one. So here's a routine to provide all of the above mentio…
... /> ld b,c ;calc 2nd opcode for BIT n (uses AND ... /> RESSET: sla c ;calc 2nd opcode for RES,SET
sla ...AGD 2.6 WoesThis was originally in the New Game Ideas section but thought this would be the best place to post this: I'm no programmer, hence i'm using the exce…
... on, then come to a halt at the other higher/lower ...The short blocks loaded in Jet Pac(Hope this have not been previously discussed. If so, my apologies) Is there any reason why Jet Pac loads three short blocks after the main block? I…
... (E9h) is nothing but the opcode of the JP (HL) instruction ...A z88dk + sp1 demo (with source)Since nowadays people are still wondering about how difficult it is to make something in z88dk, I thought I just put a very simple demo to show how e…
Since nowadays people are still wondering about how difficult it is to make something in z88dk, I thought I just put a very simple demo to show how easy it actually is. (Actually I've already published this one some time ago, but this time the source is ...8080 opcode question ?Never mind I think I have worked it out
Never mind I think I have worked it outSpecBAS 0.730 Now available!Well, I felt I should release SpecBAS as it is right now - my new son has been born (this one survived! \o/ ) and when he comes home I'll have very l…
... ] will list your code in "opcode" form used by the VM ...Quick OpCode Q...Leet emulat0r makerz.... I've seen two versions for this set of OpCodes, obviously they are undocumented.... FDCB d 40 BIT 0,(IY+d) (From Seans z80…
Leet emulat0r makerz....
I've seen two versions for this set of OpCodes, obviously they are undocumented....
FDCB d 40 BIT 0,(IY+d) (From Seans z80 doc)
FDCB d 40 BIT 0,(IY+d),B (This makes more sense.)
...2nd OpCode question.... pretty please...Whats 0xED 0x70 please? Sean's doc says: IN F,(C)* / IN (C)* That doesn't mean much to me :( Lower down in Sean's doc it says: ED 70 is IN F,(n) so…
Whats 0xED 0x70 please?
Sean's doc says: IN F,(C)* / IN (C)*
That doesn't mean much to me :(
Lower down in Sean's doc it says: ED 70 is IN F,(n) so would that would make it make it the same as IN A,(n) but with the flag ...Precisely timed loops in assemblyI'm looking for a way to make my code stop until the raster has reached the lower screen border (right after having drawn the last pixel line). I und…
... ). I understand that I should HALT first to wait until the ...A new multicolor engine called BIFROST*I'm glad to announce the release of a new multicolor engine implemented by yours truly, including high quality 16x16 tiles designed by R-Tape: [IMG]…
... it would just need to HALT first to synchronize and avoid ...Multicolour demo using z88dk + BIFROST* (+source)This is just a demo to show how to show multicolour using z88dk, using the BIFROST* engine (more info [URL="http://www.worldofspectrum.org/forums/sho…
This is just a demo to show how to show multicolour using z88dk, using the BIFROST* engine (more info [URL="http://www.worldofspectrum.org/forums/showthread.php?p=608777"]here[/URL]).
[IMG]http://www.image-share.com/upload/1337/164.png[/IMG]< ...28-character wide multicolour(ish) on 48k SpectrumLong-time lurker here... I've always been interested in rainbow effects on the 48k Spectrum, mainly from a perspective of "Just what [I]would [/I]ha…
... /> LD B,L
TSLP3 HALT ; Hang around, modifying the instructions ...How do you open a port for a game?Hello all I am trying to get a game running via multiplayer.It doesn't want to let me do this and the customer support has told me to open your port…
... have come to a shuddering halt!.
This is not ...
