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Record 419 letterI've just got a 419 email (first to get past my shitfilter for ages) and I must admit I am impressed. Yes the crap tale of woe is there (money alrea…
... . Financial Union Limited has no single idea of what's the ... />
Please observe this instruction religiously. Please, again, note I ... -
New game: Nanako Descends to HellJust a bit over two weeks after their first game, The Mojon Twins strikes again with a new game for Spectrum 128k and Amstrad CPC: [url]http://www.m…
... /> bpoke(0xf1f1, 195); // POKE jump instruction at address 0xf1f1 (interrupt service ... /> bpoke(0xf1f1, 195); // POKE jump instruction at address 0xf1f1 (interrupt service ... only want to call the single ISR function, you don't ... -
Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …
... look at an assembly language instruction and know what it does ... they all go into a single tread? Could get messy![/quote ... -
Tips on (dis-)assembling Z80 instructionsedit: Naturally I managed to post this in the wrong forum. I'd much appreciate it if any moderator would move it to the development section. For the…
... try:
a single line
[label] instruction [comment] is input ... of states which describes an instruction is pretty small (basically ... opcode.
on Z80 instruction's opcodes are not ... type instructions) by given instruction type and its operands.
Which is the most technically accurate Spectrum Emulator?Ok, which is the most technically accurate Spectrum Emulator? Please don't just vote but give reasons why.
... MEMPTR; there isn't a single game or demo which needs ... "hidden" MEMPTR register on every instruction in order to pull out ...Interface One - New FunctionalityAs you may (or may not) be aware the Interface One is a pretty powerful piece of kit. One of it's greatest features is being able to easily extended …
... avoided.
Having a single, well known "intialization trap" either ... certain address, or an OUT instruction on a certain port with ... the instruction at a fixed point in ...Z80 'EXX' ConfusionI was working on a little Z80 routine last evening, and, having run out of registers, resorted to sticking one of the values into a memory location a…
... , in fact, the most useful instruction ever. When you're passing ... implemented a bitwise mirror instruction as a single operation, which would have ...Z80 'EXX' ConfusionI was working on a little Z80 routine last evening, and, having run out of registers, resorted to sticking one of the values into a memory location a…
... implemented a bitwise mirror instruction as a single operation, which would have ... 'm skechy on the 16bit instruction set.
No idea ...Z80 'EXX' ConfusionI was working on a little Z80 routine last evening, and, having run out of registers, resorted to sticking one of the values into a memory location a…
... implemented a bitwise mirror instruction as a single operation, which would have ...Why did Ultimate games load like this?What I remember about the early Ultimate games was the unusual way they loaded. You'd get the BASIC bootstrap loader, then a SCREEN$, then a main bl…
... single byte LOADed in at this address contains a JP (HL) instruction ...Bit functions speedI just stared nonplussed at the documentation for the bit functions. Apparently, if you're using the accumulator, using AND and OR is faster than se…
... in a single byte. The way Zilog extended the instruction set was ... to add 'modifier' opcodes. Ie a single byte ... used to indicate the next instruction was an extended one. So ... most of the new Zilog instruction went from one byte (4 ...Bit functions speedI just stared nonplussed at the documentation for the bit functions. Apparently, if you're using the accumulator, using AND and OR is faster than se…
... those processors made; others included single cycle execution for most instructions ... in one cycle. The fastest instruction on the eZ80 is 3 ... has a pipeline. The first instruction is executing, the next is ... can only deal with one instruction at any one time.
Bit functions speedI just stared nonplussed at the documentation for the bit functions. Apparently, if you're using the accumulator, using AND and OR is faster than se…
... you wanted to prevent an instruction from selecting A, it would ... you look at all the single register instructions like it you ...Sound Basic 1.7Hi, I'm new here, anyone heard of Sound Basic 1.7 for Spectrum 48 ? The program can be found from WoS, it contains a manual/instructions/demos in t…
... of them.
Instruction *ENVELOPE defined by the parameters ... ).
*EFFECT instruction is used to connect to ... eight individual sounds in a single effect
Amplification with ... defined instr. *ENV. Instruction format is as follows:
Help fix this keyboard read program?This code runs in an interrupt routine with DI. What would be the simplest way of making it so it doesn't auto repeat a keypress? [code]keys: ld a…
... either a shortcoming in the instruction set (and I'll grant ... ]
.state_data_structure
defb state ; single byte state 0,4,8 ...
defb 195 ; z80 JP instruction
defw code ; address of ...New member here. And a spider! :)Hello everyone. My name is Sekrets. I'm quite a lonely individual, searching for a digital home where I might find fellow speccy enthusiasts to adopt…
... 34 cycles. This 20-cycle instruction does the same job:
single bytes defined next to each ...Corrections1.[url=http://www.worldofspectrum.org/infoseekid.cgi?id=0007023]Spell Of Christmas Ice[/url]. -Year of the release should be 1984, not 1989. -Not s…
... "]Thrust-II[/URL], authors from instruction.
(C) 1986 SIMON ... objects up etc by using single key presses, not by entering ...Dizzy games for spectrumIf someone have this games and want to sell them, I'm interested to buy them (only complet version: tape+manual+case): - Spellbound Dizzy; - Dizzy P…
... two Dizzy compilations, plus some single cassettes. The compilations are in ... 6"x7" cardboard boxes with instruction sheets. If you're interested ... the series)
Plus single cassettes (+ case + inlay) of:
Sprite MaskingI was looking at the sprites in some games, and noticed they have sprite followed by mask. Usually a row at a time (so the mask is sort of interleave…
... the next set using a single-byte-instruction (exercise left to reader ...Computing: the next 25 yearsWe saw the birth of the 8086 microprocessor which introduced Space Invaders to the arcades. Zilog Z80's microprocessor was released as a cheaper alte…
... of improvements over the 8080 (single supply voltage, more instructions, integrated ... were pin-compatible, but not instruction compatible, with the 6800 series ...Z80 Machine Code Question...Hi Folks, I know not strictly a BASIC question but I have started to learn Z80 machine code - 25 years too late! :smile: I have been reading a book…
... by an example where you single-step through Z80 instructions, and ... to 'ab'use the LDIR instruction. Have a look at this ...ula bookula book is here: [url]http://www.zxdesign.info/book/[/url] can i post sam coupe stuff here - she kind of is a speccy if you stuff the speccy rom i…
... 's copper. It reads an instruction list from the main memory ... chip. It can process 3 instruction lists at a time, primarily ... list more easily (though a single list can quite effectively drive ...Developing ZX Spectrum using 8 chipsHello. Sorry, my english is not perfect. I am developing new realising of ZX Spectrum. There are 8 chips in my sch. Central processor and video proce…
... executes most instructions in a single cycle, so clock for clock ... clock cycles to execute an instruction than the classic Z80, but ...Pretty CrashesTo make a 48K spectrum crash spectacularly and beautifully enter the following into basic. Also works on a 128k in 48k mode though not quite as prett…
... IM2 routine without using this instruction!
Edit ... device provides the next instruction
to be executed ... device only need supply a single byte instruction. Alternatively, any other < ... necessary to execute this instruction is two
...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…
... /> i forgot to add the instruction:
100011 load loc ... loc" instruction? Also, I would suggest choosing mnemonics that are single words ...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…
... " is really a single 8 bit instruction if you free yourself ... contained are also 8 bit instruction. You mentioned about having ... your n instruction giving the ability to ... similar thing built into the instruction positions. e.g. INC ...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…
... tempted to suggest b7-b4=instruction, b3=indirect, b2-b0= ... line and have all instruction operate on a single fixed destination registion ... immediate value just after the instruction. You'll have to ... what a utterly othogonal Z80 instruction set [url=http://mdfs. ...The Programmers Development System (PDS)Hi everybody, I recall this system has been mentioned several times on WoS forums. Last time was, I think, when those sources from Maz Spork (Buggy …
... marking is done using a single flashing orange character to mark ... look up the current instruction and also specify instruction timings, viewed in ...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 …
... attend them without missing a single event.
On the ... main program, and the EI instruction is executed, it will be ...Games in machine codeHi everyone, How do go about doing multiple shots like a machine gun, do you have to store every x and y position of each bullet? When you kill som…
... some cases because the next instruction was processed during address decode ... +3DOS routines recently to load single files into fragmented memory and ...
