Spectrum Computing

back to that single main question about direction inside memory so i write a single elias value in memory on a fresh cleared location, its the value 1 that delivers a single bit without leading 0 is this single bit stored on bit 0 %00000001 or bit 7 %10000000 its very much "navel staren" b...

So, I use the C register holding the current target bit, so 1, 2, 4, 8, 16, 32, 64, 128. With A holding the current byte that’s going to get added to. Then the sequence goes like this; Jr nc, jump over if the bit is a 0 Bit= 1: Or c Bit=0: Xor c This way, regardless of when the target bit in A is, ...

You can't LD IXL, L since the option for index registers overrides use of HL in the instruction. i found that, its excluding H and L becouse those codes are used already 0x6b is ld l,e which uses l already 0xDD6b does the same apperently, but different http://z80.info/z80sean.txt DD60 LD IXH,B* DD6...

Hi in 3d chess you use IXl and IXh I was wondering if i should use IX as destiny instead off de, for long shifts thats 2 extra registers. i looked a bit in your source for bits and found test_7: ld e,l ;adjust IX to match HL ld ixl,e ; COULD tha be written as test_7: ld ixl,l ;adjust IX to match HL ...

You could change the bit according to a register holding the current bit. A method I used in Chess 2k19. The source is in the archive. If I recall, it sets the bit, then resets it if required by xor-ing the register again. Obviously only possible using A thank you, i have a look into the wonders of...

hmm al least this one does not crash, but neither has a result. i should look at the shiftt of a double register instead, but that has its own troubles ; shift 8bit as 1-15bit within 24bit max ; elias ; a ; 63 =6bits = 111111 > 00000111111 = 11bits in DE ; last positin x= b ; xxxxxx00 00000000 00000...

10 BORDER 4: CLS : POKE 16384,1 views as 00000001 this sets a bit the visual problem, in my mind i have to turn that picture in to a POKE 16384,128, but only visualy. its logical to start with bit 0 as first bit, now i need a smart way to pin every bit on the correct number, on n=1 then the next fre...

sorry, realy love you people, but some times i dont get it

its like a

but you insist on a


tja
?

you miss the point of "origin" by passing by on zx via that pc the origin of '0' there was a roman salesman having all products all the time depending on the ship loads arriving plenty off oil, seeds and wood and stone, but often lacking fruits one day that arab guy came allong again and s...

even so, it will probably take a VERY long time to run. I don't think that's a good idea... waiting 5-6 times for a tapeloading error on a full 48k program like WSHAS thats 30-45 minutes life time, waiting for a 5 ball tictac movie takes 24h rendering, for about 2 seconds zx cpu time. ONCE zx0 is m...

ok just for fun, some visuals 3 DEF FN b$(d)=VAL$ ((CHR$ 193+"d" AND d<=1)+(("FN b$(INT (d/2))+"+CHR$ 193+STR$ ((d/2)<>INT (d/2))) AND d>1)) 5 DEF FN e$(a)="000000000000000"( TO LEN FN b$(a)-1)+FN b$(a) 7 DEF FN b(a$)=VAL (CHR$ 196+a$) 10 DEF FN a(a)=PEEK a+256*PEEK (a+...

unwrapping while saving the elias-gamma-bitstring in basic only, but now i know what i should want it looks as clumbsy as it is ... 3 DEF FN b$(d)=VAL$ ((CHR$ 193+"d" AND d<=1)+(("FN b$(INT (d/2))+"+CHR$ 193+STR$ ((d/2)<>INT (d/2))) AND d>1)) 5 DEF FN e$(a)="000000000000000&...

including "unwrapping" give some 16bit values and CLOSE with 0 or bigger then 65535 then it SHOULD give back the correct nummbers just a test like others :roll: 3 DEF FN b$(d)=VAL$ ((CHR$ 193+"d" AND d<=1)+(("FN b$(INT (d/2))+"+CHR$ 193+STR$ ((d/2)<>INT (d/2))) AND d>1)...

a 16bit basic example 3 DEF FN b$(d)=VAL$ ((CHR$ 193+"d" AND d<=1)+(("FN b$(INT (d/2))+"+CHR$ 193+STR$ ((d/2)<>INT (d/2))) AND d>1)) 5 DEF FN e$(a)="000000000000000"( TO LEN FN b$(a)-1)+FN b$(a) 7 DEF FN b(a$)=VAL (CHR$ 196+a$) 10 DEF FN a(a)=PEEK a+256*PEEK (a+1): DEF ...

thinking out loud: elias-gamma (or elias-gamma-string) is a bitstring of ANY length and ANY amount off numbers since its unkown what length next number will have its max number is SET by a series of zero's that realy have to be counted that is the gamma point '1' from and including there you take TH...

so, you only have to set (hl),0 inc hl (hl),elias and virtualy you are done if you count that 2^b bit i did not test this one but i want to know if its use-able for an zx0 ON Z80 machine its stupid, i warn you and in the C the elias is "optimised " directly after use. its feels like b64, s...

So, there is NO elias-gamma NULL , took me some time to realise that one ... :D :P :shock: :mrgreen: :roll: :evil: :?: :!: now its 98,7 % or some but it should write the encoding correct in mem, which is actualy just a shift with 8 bytes inside 16 bytes, so why dont i do that? since i wanted to see ...

NO IT aint working, yet but its at least working a bit, i had one stupid error , forgot exx hl BUT my basic part has severall QUOTE signs and inside and Token will be written in txt, with bas2tap,zmakebas AND txt2emu, so i quited that for now but i have to make it visual in memory so i will try diff...

well i made a crash by overwriting BASIC, but how and why ??? ; use ; eliasg021 ; pasmo -d --tap --name eliasg021 eliasg021.asm eliasg021.tap eliasg021.symbol ; cat elias.tap eliasg021.tap > eliasgamma021.tap ; bas2tap -selias -a10 eliasMCloader.bas elias.tap ; 10 DEF FN b$(d)=VAL$ ((CHR$ 193+"...

https://en.wikipedia.org/wiki/Elias_gamma_coding 10 DEF FN b$(d)=VAL$ ((CHR$ 193+"d" AND d<=1)+(("FN b$(INT (d/2))+"+CHR$ 193+STR$ ((d/2)<>INT (d/2))) AND d>1)): DEF FN b(a$)=VAL (CHR$ 196+a$) 20 FOR f=0 TO 255 25 LET a$=FN b$(f) 30 PRINT TAB 3-LEN STR$ f;f;" ";a$;TAB 1...

Hi wanted to mention "Logic RAM Banks" although you probably solved to problem there are TWO ways off counting the memory banks while they are the same chip https://github.com/ZXSpectrumVault/rom-disassemblies/blob/master/Spectrum%20128K/Spectrum128_ROM0.asm it mentions the difference in a...

nah, it aint cheating when ZX can do it btw, i realized, if zcc is used its better to avoid those IX and IY.. startdef ld hl,(DEF_ADR) ; hl = actual RAM location in BASIC listing at position off the DEF FN ld de,(mode) ld bc,4 add hl,bc ; adres+4 = var f rrc (hl) rlca ld c,8 add hl,bc ; adres+4+8 = ...

Hi how big is the change that zx0 will compress at a z80 machine? zcc DOES compile zcc +zx -vn -zorg0x5f00 zx0.c optimize.c compress.c memory.c -ozx0 -DAMALLOC -lndos -create-app BUT zx0 uses ARG[] in main if zx0.c was written for a zx memory, will the other parts compres? # JUST THEORY PSEUDO CODE ...

A standard USB-floppy probably won’t do, as it doesn’t give low-level enough access to the disk (as far as I understand). afai understand and read an UBS drive is a 9sector per track device while it should be 10 per track. i am not sure since format is a software matter, but modern tech has it own ...

cool and disturbing
i realize i have to reconfigure my woot not only with real names, but with real chronos aswell
btw, does it come with lyrics?