-
SE Basic Type-ins^Pete suggested creating a sticky thread for SE Basic discussion. I thought a Type-ins thread might also be useful. Up to the mods if they want to ma…
... /> call shift
call c_chan
call m_chan
xor a
org $aa42 ; 43586
shift:
ld de,font_1+$0300 ... /> ret
err_b:
xor a
ld (atflg),a ... /> ret
wrap:
xor a
jr zend
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…
... store it in col
xor a ; set a to ... ret
err_b:
xor a ; set a to zero ... br />
do_cr:
xor a ; set A to zero ... jr nz, zend ;
xor a ; reset if so
rrca ; shift right
rrca ; four ...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?
... .
SLA m Shift operand m left arithmetic.< ... br /> SRA m Shift operand m right arithmetic.< ... br /> SRL m Shift operand m right logical.< ... s from accumulator.
XOR s Exclusive OR operand ...IN or INKEY ?just curious which is better to use.. I have a menu done.. and use 6/7 to go up down it + space to cycle thru the options (using inkey).. obv. if I w…
... do the whole set: AND, XOR, OR, BIT, RES, SET, CPL ... , SLA, SRL (the rotate & shift Carry variants aren't useful ...Newbie says 'Alreet?'Hiya dudes, Just dropping a line to say hello as i've decided at 33 to try and fulfill a long time ambition to write a speccy game in machine code..…
... . So the object is to shift some bits around beginning with ...
11 rlca
12 xor $82
13 ld h ...Xor-shift random number generator for Z80[QUOTE=Patrik Rak;320244]Come on, people, [URL="http://www.jstatsoft.org/v08/i14/paper"]xor-shift generators[/URL] devised by Marsaglia, that's the w…
... you use simple operations like xor and shift, you can express each ... implement (like some combination of xor and left and right shifts ...BIT/RES/SET b,r where b is variableWhat's the best way to use the bit flag group of commands if it's not known in advance which bit should be referenced; ie. where it's dependent upon …
... reset it. As a bonus XOR can be used to flip ... .
You can use shift rotate instructions to move the ...Routine for clearing screenI was looking for a 'nice' way of clearing a screen of graphics in Z80. After a ridiculous amount of time mucking around, this is the best and most …
... .org/wiki/Linear_feedback_shift_register]Linear feedback shift register[/url]).
XOR A
RR H ... lfsr/2)" bit
XOR A
RR D< ... br /> LD A, 88h
XOR D
LD D, A ... br /> LD A, 05h
XOR E
LD E, A ...Abbaye des morts[url]http://www.locomalito.com/juegos_abbaye_des_morts.php[/url] Looks like Spectrum, sounds like Spectrum, but it's not a Spectrum ('cause no colou…
... engine does not have to shift the sprite horizontally. Pixel precision ... you could use a faster xor routine, eg, but I wouldn ...Abbaye des morts[url]http://www.locomalito.com/juegos_abbaye_des_morts.php[/url] Looks like Spectrum, sounds like Spectrum, but it's not a Spectrum ('cause no colou…
... engine does not have to shift the sprite horizontally. Pixel precision ... you could use a faster xor routine, eg, but I wouldn ...Need to scroll one column using m.c.I've used many of the available routines to scroll the entire screen in any direction, but I'm not being able to find one that would allow me to scro…
... ld l,0
call SHIFT ;shift display column
call $ ... l,1
call SHIFT ;shift attributes column
ret< ... value
xor l
and e
xor l ; set bits 5, ...AY-3-8912 emulationI am trying to improve the emulation of the AY-3-8912 in FBZX wii. I studied the code of some emulators and read some documents. I would like to be…
... . The input to the shift register is bit0 XOR bit3 */
/* (bit0 ...AY-3-8912 emulationI am trying to improve the emulation of the AY-3-8912 in FBZX wii. I studied the code of some emulators and read some documents. I would like to be…
... bit shift register with an input (bit 16) of Not-XOR of ...AY-3-8912 emulationI am trying to improve the emulation of the AY-3-8912 in FBZX wii. I studied the code of some emulators and read some documents. I would like to be…
... bit shift register with an input (bit 16) of Not-XOR of ...AY-3-8912 emulationI am trying to improve the emulation of the AY-3-8912 in FBZX wii. I studied the code of some emulators and read some documents. I would like to be…
... cases the output is bit0 xor bit1[/QUOTE]
The ... is fed back to the shift register. The MAME guys seem ...40 Column Printing RoutineI've written a 40 column printing routine, which I'd like to share... It's my first piece of 'public' code so go easy on me! I don't think it is a…
...
ret nz
xor a
ld (xcoord),a ... br /> ld (de),a
xor a
inc de
populatecoords ; sets shift amount, and actual coordinate for ...Survivisetction .tapI found on some site about Atari :lol:a link to something like .tap version of recent great Russian Spectrum game Survivisection. I don't know if it…
... as "fire/select" and right shift as "go"[/QUOTE]
At adress #6C33 is XOR A (byte #AF) instead needed ... ,(C) ;read buttons status
XOR A ;reset register A ( ??? ERROR ...Redefine keys routineHow would I go about making a memory efficient redefine keys routine? I only want to define up, down, left and right and reserve key 'H' for pause.…
... also look for sym/caps shift modifiers:
[code]
in_WaitForNoKey:
xor a
in a,($fe ...Confounded DEF FNCan anyone see why this is going wrong? I've been tinkering with it since tea time and got nowhere. [code] 2 DEF FN t$(n,t,d) =STR$ INT (n/t)…
... /> ;[color=blue]
xor a
ld de,HHC ... br /> exx
xor a
ld ix ... br /> sla d ; shift BCD 1 bit left< ... />
GetDigit:
xor a
SubDigit:
add ...Scrolling by 2 pixelsWhat is the fastest way of scrolling a Spectrum screen line by 2 pixels left or right? When thinking about it I've come to this simple solution: [C…
... routine and called twice to shift by 2 pixels, the ... /> ld c,8
xor a
CHAROWPP:
... ex af,af'
xor a
ld b,4 ... pop hl
;exx
xor a
pop hl
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…
... ; (10T)
.break_pressed:
xor a ; clear carry and set ... br /> add a,a ; shift EAR bit into sign bit ... ; (10T)
.break_pressed:
xor a ; clear carry and set ...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…
... more robust than a simple XOR?[/QUOTE]
As all data ... time, and CRC is just shift left / conditional XOR.Clashbasher a new interface to reduce colour clashI've been working on this for a while now. [IMG]http://markamy.uwclub.net/cauldron.JPG[/IMG] Basicly its an add on for a 48k spectrum, which reinte…
... loads and some of the shift and rotate opcodes.
and $07
xor $07
jp nz, here ...What would be the simplest tape loading routine?I'm searching for some small assembly snippet I can use to load a (headerless or not) block from tape into RAM I can embed in my C games to load furt…
...
place temporarily.
XOR L Return now if the ... BREAK & EAR.
RRA Shift the byte.
RET NC ...
