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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…
... bit 0-2
rlca ; shift
rlca ; five
... address
; left nibble on left hand side
rrca ; shift right
rrca ; four ... at destination
rlca ; shift left
rlca ; four bits< ... -
Fastest way to mirror a byte?I.E. turning 01100000 into 00000110, in assembly. I'm trying but I suck at stuff with rotation and the carry bit. Any pointers?
... the case of division (right shift), the number is considered to ... the left shifts, it would be expected that a logical shift would ... bit (0), and the arithmetic shift would do exactly the same ... should better be called SLS (Shift Left Set), because it enters a ... -
ZX-Paintbrush 2.2.1 releasedDear readers and friends of ZX-Spectrum emulator stuff! Today I released the version 2.2.1 of ZX-Paintbrush with interesting new features and many b…
ZX-Paintbrush 2.2.1 releasedDear readers and friends of ZX-Spectrum emulator stuff! Today I released the version 2.2.1 of ZX-Paintbrush with interesting new features and many b…
ZX-Paintbrush 2.2.1 releasedDear readers and friends of ZX-Spectrum emulator stuff! Today I released the version 2.2.1 of ZX-Paintbrush with interesting new features and many b…
Ay Real Time Synthetizer SoftwareSpectlemen and Spectladies!It's been a long time that I'd like to ask this.... I ask thee to create a new musical software for our ZX Spectrum machi…
... /> Channel 3 = Cursor LEFT+ Left Caps shift / Cursor RIGHT + Left Caps Shift
Turn ... Shift+ Extend mode or key note?
Channel 3 = Right Caps Shift+ Left ... Caps shift or key note? ( I hope ...Scrolling attribute thingJust messing with scrolling attributes. Its absolutely no use, but impressed with the variable speeds of scrolling. [url]https://dl.dropboxusercont…
My 2nd method was wrong anyway (need to add hl, hl 3 times not add hl, de). The guy who posted after me had an even better way.
EDIT: The shift left 3 times method is only really best if A < 32.Experimenting with turboloadersHello, My first post, having lurked here for a while. I'm a lifelong computer nerd, Spectrum fan since childhood in the eighties, and have recently…
... time, and CRC is just shift left / conditional XOR.SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... ... of i
rl d ; left
exx ; main register set ... 4
adc a, a ; shift left including new bit
daa ...
ld a, 128 ; shift f by
sub l ... register set
call shift_fp ; shift bits
org ...SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... carry, if set, at each shift
exx ; alternate ... t_shift:
srl d ; shift DE
rr e ; ... less_mask:
sla a ; shift left and insert zero in bit ... br /> add hl, hl ; shift number left
jr nc, rstk_loop ...SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... /> sub b ; paper
rlca ; shift left
rlca ; three
rlca ... xor 191 - y
rlca ; shift left
rlca ; twice
ld ...
point_lp:
rlca ; shift left
djnz point_lp ; loop until ...reversing an LFSRWhat's the correct way of reversing an LFSR so that it produces the same numbers but in reverse order? The little BASIC program below shows a test I …
... do is to (conceptually) shift the taps in the ... bit wrong - if you shift right, you should always include ... the taps; if you shift left, you should always include ... the left-most bit. This is ... gt; (for a string, right shift)
i.e ...Demo of multidirectional scroll 50fpsHello!!! Im working with scrolls, and I want to show you a demo of a posible game. It works at 50fps and can manage about 7 sprites in the screen w…
... at a time, it can shift left and right by a byte ...Demo of multidirectional scroll 50fpsHello!!! Im working with scrolls, and I want to show you a demo of a posible game. It works at 50fps and can manage about 7 sprites in the screen w…
... at a time, it can shift left and right by a byte ...fixed point mathsI came across this site which is quite interesting [URL="http://z80-heaven.wikidot.com/advanced-math#toc18"]http://z80-heaven.wikidot.com/advanced-ma…
... being referred to as SLI (Shift Left Illogical) in the distant past ...fixed point mathsI came across this site which is quite interesting [URL="http://z80-heaven.wikidot.com/advanced-math#toc18"]http://z80-heaven.wikidot.com/advanced-ma…
... be named [B]SLL[/B] (Shift Left Logical) officially. However, since it ... name it [B]SLS[/B] (Shift Left Set) instead.
Both ...fixed point mathsI came across this site which is quite interesting [URL="http://z80-heaven.wikidot.com/advanced-math#toc18"]http://z80-heaven.wikidot.com/advanced-ma…
... .co.uk/webhp?q=%22Shift+Left+Inverted+Arithmetic%22&gws_rd ... =ssl#q=%22Shift+Left+Inverted+Arithmetic%22]"Shift Left Inverted Arithmetic"[/url ...fixed point mathsI came across this site which is quite interesting [URL="http://z80-heaven.wikidot.com/advanced-math#toc18"]http://z80-heaven.wikidot.com/advanced-ma…
... following:
[quote][b]Shift Left with One Insertion (SL1)[/b ...A question about AGDIm trying a Little bit this excellent tool by Jonatan Cauldwell, but in Events, I dont know what key is "Symb" mentioned in the txt, as I need it to …
Refer to your emulator documentation. On some emulators is control, on others is right shift (left shift used as caps shift).A question about AGDIm trying a Little bit this excellent tool by Jonatan Cauldwell, but in Events, I dont know what key is "Symb" mentioned in the txt, as I need it to …
[QUOTE=Zup;809896]Refer to your emulator documentation. On some emulators is control, on others is right shift (left shift used as caps shift).[/QUOTE]
Yes, thanks, I will do so tomorrow, Im using Spectaculator, btw ;)Multiplying. Again.Is there a faster way of hl=a*32 than doing add hl,hl 6 times?<div><br></div><div>I get the feeling that working with 8 bit registers for most of it …
P.O.W.As far as I know, a port of P.O.W. (Prisoners of War) from NHK, doesn't exist. [img]https://cld.pt/dl/download/61d19b5e-453b-489c-b17b-d3ed6fccd594/…
... moving from left to right you will need to shift bit 7 ... so you can only shift by 4 bits using ... with whatever value you will shift left, i.e. what enters ... processed from right to left (Not left to right), since ... shift out of right byte, to be fed to left byte ...ive found an attr scrolling routine but i want to remove the smaller scroller within it, etc.https://pastebin.com/K4nG3xbX also i would like to be able to change the colours and not have a shadow. http://www.worldofspectrum.org/pub/sin…
... 11 & 12 one pixel left
AND A ; FA97 ... CALL L_FB51 ; shift message2 attributes one byte to the left
LD ... 1F 00
LDIR ; shift left 31 attribute characters, 1-31 ...Troubleshooting my +2To put this in context: a while back (i.e. late last year and earlier this year) I was looking to put together a compilation of modern Spectrum games…
... the entire paper area shifting left by one pixel or so ... pixel from another. It should shift left and right at apparently random ...ive found an attr scrolling routine but i want to remove the smaller scroller within it, etc.https://pastebin.com/K4nG3xbX also i would like to be able to change the colours and not have a shadow. http://www.worldofspectrum.org/pub/sin…
... -15 one byte to the left
PUSH HL ; FB57 E5 ... 01 1F 00
LDIR ; shift left 31 attribute characters, 1-31 ...Cubic RevealI just though I'd develop this a little further. Written a while ago on a whim! [img]https://dl.dropbox.com/s/p44y5dda49ucmop/square_reveal_1_1.gi…
... />
ld b,h ;B=left hand mask, copied to H ... ;
a2s_l:
sla l ;shift left x 3
jr c ... ,c ;swap masks (right into left)
xor 21h ;make ...Is it possible to make the Z80 execute a bizarre instruction?What happens when it gets an unrecognised instruction OP Code, I mean something following a #ED that isn't one of the undocumented instructions eithe…
... for a set of SLLs Shift Left Logical operations that were not ...A sped up pixel-shift routine for 1-byte–wide spritesHere’s an optimized (for speed) real-time sprite shifting routine for sprites that are one byte wide. It uses no memory variables for storage of inte…
... ,a ;no? Make B our shift counter
ex af,af ...
msl_shift
rr c ;shift through Carry
rra
left
inc h ;down one ...whats your second favourite retro computerOk i'm going to assume that for most of us here the speccy is our favourite number 1 retro computer,its the best home computer in the world etc etc :…
... do you think you can shift in one frame? i've ... there's a little time left free for a music driver ... /> If we're unrolling to silly levels, I believe this is ...tips on optimizing assemblyI wrote a small routine to rotate right a whole screen character line complete with attributes. This is my third ever assembly routine, so I guess i…
... to go right to left for a circular shift in this case ... the sort of silly micro-optimisation that's better left until last ... )[/QUOTE]
It's not *too* silly ...
