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Emulator developmentHi, Could anyone explain or direct to a link that explains in not to technical terms how an emulator is developed. It has always blown my mind eve…
... to a link that explains in not to technical terms how ... to write in C or whatever language every possible z80 instruction, and how ... -
(Collected) Darkhog's noob question about z80 assemblySince when I'm learning new language or library, I tend to ask lots of stupid (for any advanced person) questions and I don't want it to have mess up…
...
push af
call c,lessthan4
pop af
cp 4
call c,lessthan4
ld a,e ... a memory location is hardcoded in an instruction. But of course: if ... -
Function with push and popIm trying to see if I understand push and pop when it comes to using to pass parameters to functions: [code] LD HL,16384 LD A,5 Push AF Ld A…
... an extra prefix byte in the instruction encoding -- if you ... become much more important in real code. Nevertheless because ... to left
ld c,(hl) ; c = spr graph rotated ... mask it
or c ; or graph rotated from ... -
Running out of fingers in AssemblyDear all, Still trying to learn Assembly and have put a few routines together. However, as my routines become a little more involved I find myself…
... memory a displacement d encoded in the instruction, must perform a 16 ... secondary memory pointer
"B,C,D,E,H,L" 8 ... 2
ld e,c
ld d,b
inc hl
jr c, write_lp
; last write ... -
Full-screen 32 columns bicolor engine NIRVANA+I'm glad to announce the release of [b]NIRVANA+ ENGINE[/b], providing support for bicolor graphics (multicolor 8x2) in 32 columns for all standard Sp…
... ;887969"]I'm using NIRVANA+ in my first assy learning project ... [font=Courier New]NIRVANA_halt()[/font] in the txt file, but it ... 's not in the code. Should I just ... in C and Boriel's ZX BASIC for the [b]halt[/b] instruction ... -
Full-screen 32 columns bicolor engine NIRVANA+I'm glad to announce the release of [b]NIRVANA+ ENGINE[/b], providing support for bicolor graphics (multicolor 8x2) in 32 columns for all standard Sp…
[quote="Einar Saukas;887976"]Yes.
[b]NIRVANA_halt()[/b] is just a macro in C and Boriel's ZX BASIC for the [b]halt[/b] instruction.[/quote]
Sweet, thanks! -
The point of IX+1 IX+2 ?the numbers that you can add-on to IX and IY seem hardcoded, so I dont see the use of that feature? any examples of the use of IX and IY plus number…
... into eldric's character data in the comments instead. Every ... ; call player action function indicated in "A"
pop ... ix) will execute the jump instruction at the top of the ... to do it this way. In C, usually you have an array ... -
are there any machine code to basic converters?i know it sounds stupid but for amature programmers like me it would be great. i could speed up the basic on an emulator and it would give me more of…
... not on Spectrum in Basic but on PC in C++ or whatever ... way. Commercial games written in assembler usually occupied whole ... much bigger as each Basic instruction using variables, numbers and ... more memory then instruction doing similar thing in assembler. So you ... -
ZX Spectrum Z80 Development Environment on WindowsHi Folks, Just wondering what the recommendation is for a ZX Spectrum Z80 Development environment on Windows? Getting fed up with hand coding Z80…
... in C, you use C as defined by the c committee. If you program in ... guess what all the simple instruction changes were like "EXA" ... support because that's standard in higher level languages.
... shown to be damaging before. In C, for example, the pre- ... -
Other than using attributes what other ways to detect collisions, when using char based movement?So I'm slowly working out the bits and pieces to write a game completely in assembly. I've been using attributes when writing in BASIC to detect whet…
... with an LD BC,(nnnn) instruction. Just remember the way memory ... X ends up in C and Y ends up in B - that' ... my co-ordinates held in B and C aren't destroyed by ... ) or RR (which fills in the top from the last ... other end also gets duplicated in the processor's Carry ... -
Remainder (Mod) calculationsI've been figuring out how to calculate remainders after integer division by a constant divisor k (A mod k = A % k). I found that for most small di…
... [/sup]-1), same numbers used in your C code above, you can ... />
This can be done in byte operations when k -
How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... rowdata to screen in cells at column C and C+1
... hl ;these four push instruction stores 8 bytes on stack ... hl ;these four push instruction stores 8 bytes on stack ... hl ;these four push instruction stores 8 bytes on stack ... -
How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... rowdata to screen in cells at column C and C+1
... hl ;these four push instruction stores 8 bytes on stack ... hl ;these four push instruction stores 8 bytes on stack ... hl ;these four push instruction stores 8 bytes on stack ... -
How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... you can use the LDIR instruction, which is a bit like ... /> *de++ = *hl++; [/code]
in C -
How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... you can use the LDIR instruction, which is a bit like ... /> *de++ = *hl++; [/code]
in C[/quote]
Any example ... -
How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... that "main" like in C. The first instruction you want to ... you have got an ORG in there. (ORG is ... load the binary to in the debugger after doing ... stuff before the first instruction in the code, EQU and ... you use them (like #define in C)).
What ... -
Console frameworkStill working on Specotron, but at the point where working out the diagonal lines collision is not good at beer o'clock. In the meantime I've knoc…
... twiddling hack is like this in C code:
[code]
uint8 ... c; // c accumulates the total bits set in v
for (c = 0; v; c ... bit shifts and rotates in a single instruction which Z80 can't ... have to check what is in C then).
I'll ... -
Console frameworkStill working on Specotron, but at the point where working out the diagonal lines collision is not good at beer o'clock. In the meantime I've knoc…
... , a
; remember C in A
ld a, c
; copy HL ... , .getkeyval
set 7, c ; set top bit in C
and ~1 ... , .getkeyval
set 6, c ; set 6th bit in C
and ~2 ...
eval_ptr dw 0 ; first instruction to process during eval
Console frameworkStill working on Specotron, but at the point where working out the diagonal lines collision is not good at beer o'clock. In the meantime I've knoc…
... , a
; loop counter in B, #FF in C
ld bc, #08FF ... , .getkeyval
set 7, c ; set top bit in C
and ~1 ... , .getkeyval
set 6, c ; set 6th bit in C
and ~2 ...
eval_ptr dw 0 ; first instruction to process during eval
Console frameworkStill working on Specotron, but at the point where working out the diagonal lines collision is not good at beer o'clock. In the meantime I've knoc…
... a
; loop counter in B, #FF in C
ld bc, #08FF ... .getkeyval
set 7, c ; set top bit in C
and ~1 ... entry
ld c, a ; stash length | evaltimebit in C
and ~# ... /> eval_ptr dw 0 ; first instruction to process during eval
Console frameworkStill working on Specotron, but at the point where working out the diagonal lines collision is not good at beer o'clock. In the meantime I've knoc…
... a
; loop counter in B, #FF in C
ld bc, #08FF ... .getkeyval
set 7, c ; set top bit in C
and ~1 ... entry
ld c, a ; stash length | evaltimebit in C
and ~# ... /> eval_ptr dw 0 ; first instruction to process during eval
Anyone remember...??Does anyone remember the magazine game "Final Conflict"?? I think it was in C&VG and was a monthly mail in war game, kinda like Risk I think. There…
...
I think it was in C&VG and was a ... monthly mail in war game, kinda like ... people each month who sent in the best "tactical moves" ... ; their names were printed in the magazine. If they earned ... getting my name in the magazine in the first or ...Z80 AssemblerSome of you may know that I'm working on a Z80 assembler. I thought I'd start a thread so I can see what people think and what they might want to see…
... they might want to see in the assembler.
< ... /> It's being written in object pascal with the Delphi ... you can describe instructions in a similar way to ... the data for the instruction LD A,n you ... lot more freedom in creating instruction definitions than TASM' ...Gremlin's Masters of the universe game mapDoes anyone know where can i find a map for this game?? there was one in the instruction booklet but i don't have it anymore. Thanks in advance.
Does anyone know where can i find a map for this game?? there was one in the instruction booklet but i don't have it anymore. Thanks in advance.Spectrum booksOK, this is a question posed not out of curiosity, but because I have to construct the 'bibliography' section of some paper I'm making. Unfortunately…
... , I must not specify websites in there (please don't ask ...My first attempt with z88dkI've just completed my first attempt at a Spectrum game with z88dk. Before you get too excited, it's pretty crap - it's a port of a game I wrote for …
... I wrote for the Gameboy in order to figure out its ... five years ago, which was in turn a clone of the ... can be achieved with z88dk in a very small amount of ... game isn't. :)
In fact, it's so bad ... ever written for the compo in C. The game is 'Ladeks' ( ...New! CSW.dll for windows based emulators!Hi all, There now exists a new library of routines for windows emulators which allows access to both csw and csw2 files. It's written in pure x86 as…
... files. It's written in pure x86 assembly and weighs ... .inc file for use in Masm and compatible assemblers. ... re going to use it in C/C++ or any other programming ... It was created by Woody in an attempt to get a ... standard library together in as small a package ...Installing Z88DK Z88DK INSTALLATION Z88DK is distributed in two parts. The first part is the platform independent bits (including source and z80 libraries) and th…
... copy of the z88dk repository in c:\CVS\z88dk. A z88dk ... have my own work directory in c:\CVS\z88dk\work with my ... dir is in c:\CVS\z88dk rather than c:\z88dk, we ... z88dk is not rooted in c:\z88dk each cfg file ... intend to keep everything in c:\CVS\z88dk and then ...Definitely OT - Amiga mail-order ads from 1985?Heya - as part of the forthcoming 1985 YSRnRY documentary chapter I want to briefly touch upon the launch of the Amiga and ST. *VERY* briefly. So f…
... ST from an issue of C+VG in 1985, back when the ... got is a brief mention in C+VG that they were ?1 ...oh man just about to build Athlon 64 and need some questions answered heeelpI've bought a AMD ( venice )Athlon 64 3200 it came with the AMD heatsink fan on the bottom of the fan is a bluey grey square patch. am i right in thi…
... square patch. am i right in thinking that is the conductive ... that i am correct because in the instruction sheet that comes with ... />
I forgot to say in the graph card manual it ...
