-
DEC BC/LD A,B/OR C/JP NZ,loopyesterday i saw nice trick:[code] dec bc ld a, b or c jp nz, loop can be replaced (bc starts >255, short jump) by: dec bc inc b djnz loop [/code] …
yesterday i saw nice trick:[code]
dec bc
ld a, b
or c
jp nz, loop
can be replaced (bc starts >255, short jump) by:
dec bc
inc b
djnz loop
[/code]
..nice -
+A/B scart cableHiya, does anyone use a scart cable on their +A/B or +3 Spectrum? I did for ages and it looked fantastic up until a year ago when i got a new TV and …
Hiya, does anyone use a scart cable on their +A/B or +3 Spectrum ... it looked fantastic up until a year ago when i got ... a new TV and the TV ... you think another cable from a different person (off ebay) would ... -
Adventure A,B,C,D,E,etcDoes anyone have any info on how this whole "Adventure A,B,etc" series came about? One of the first games I ever played on the ol' speccy was Planet…
... on how this whole "Adventure A,B,etc" series came about?
A) with me mate. I ... knew they done an Adventure B, but was never that ... fussed as they were both a bit pants.
... actually used to scare me a bit - lots to do ... -
Speccy +2 A/B adviceHi!, Just got myself a working +2 A/B? (black one) and was after a few tips. Connected via a new SCART lead on a little old 14" TV, it looks gre…
Hi!,
Just got myself a working +2 A/B? (black one) and was ... after a few tips.
Connected via a ... new SCART lead on a little old 14 ... , the last time I had a 'real' ZX Spectrum was back ... -
Flashing eeproms for a +3 - which ROM on what chip?I am wondering which ROMS go on which chip? I know the +3 as two ROM chips, ROM A and ROM B, and that I need version 4.0 roms (images from http://…
... the +3 as two ROM chips, ROM A and ROM B, and that I need ... />
Does ROM A have 0 and 1, and ROM B have 2 and ... 3? Is there a guide to ... -
ZX Spectrum and (real) B A S I CSometimes ago there was a thread "how spectrum changed your lives". Another thread dealt with "how to copy spectrum screens using basic not using co…
... not a "BASIC" at all because Basic means: ?[U][B]B[/B][/U]eginner ... ?s [U][B]A[/B][/U]ll-purpose [U][B]S[/B][/U ... ]ymbolic [U][B]I[/B][/U ... ]nstruction [U][B]C[/B][/U]ode?.
But a real ... -
Horace & Spiders ROM, boxed Elite, Deus Ex Machina, Ultimate stuff -- and loads moreHey guys, So my painstakingly built Speccy collection has all gotta go! [url]http://shop.ebay.co.uk/merchant/boblikely[/url] (scroll down for the S…
... ROM cart[/B] * [B]Dun Darach[/B] * [B]Valhalla[/B] * [B]Skull[/B] * and loads more!
[B ... ][COLOR="Red"]Update:[/COLOR][/B] Just added a load more ... -
USB mini/micro/A/B/BollixFor the past few years I've had a few HTC phones (can't remember what they were called apart from the last one, which was an HTC Touch 3G). One of th…
... I can charge from a PC using a standard USB cable... brilliant ... happened in this sector for a long time.
... out the dimwits have developed a whole new "standard" for ... .
What a bunch of [b]utter morons[/b]. Looking forward to ... -
A fast DRAW routineI was investigating how to speed up the line drawing for the [URL="http://www.worldofspectrum.org/forums/showthread.php?t=20225"]BASIC compiler[/URL]…
... faster than that in the ROM (it uses only registers and ...
__DRAW4_LOOP:
ld a, b
cp d
jp ... a
sub b
ld e, a
sbc a, a
ld d, a ... -
Shadow ROM partial decoding not implemented in emulatorsOr at least, not implemented in Spectaculator, and it seems that not in Fuse too. [URL="http://www.speccy.org/foro/viewtopic.php?f=8&t=408&start=53"…
... in the shadow ROM. This location contains a simple RET instruction ... hardware automatically unpages the shadow ROM. As the RET instruction ...
Incidentally, the program causes a "B Integer..." error, but the copy ... bytes of the ROM space are a mirror of the ... -
using the ROM's FP calculatorIs it possible to use the ROM's FP calculator to evaluate any FP expression in a single sequence of commands without breaking out to stack some other…
... possible to use the ROM's FP calculator to evaluate ... any FP expression in a single sequence of commands ...
For example, to do "A / B + C / D" I'd do ... :
stack A : stack B : rst $28 : divide : ... could that be done in a single "rst $28 ... ... -
need a new method for m/c parameter assignmentI've been using a variable length function of the form: "FN a$(a$,a[,b...,z])=STR$ USR md" to search a data table and return a string result. By putt…
... of the form:
"FN a$(a$,a[,b...,z])=STR$ USR md"
ROM call to the $27BD "Scanning ... things by using "PRINT USR a$,a[,b...,z];" method and taking the ... something like "STR$ USR md,a$,a[,b...,z]", which wouldn't pass ... -
Adding IDE to your Spectrum +2 A/B (or +3)Hello my fellow [B]WoS'ers[/B] [B]This is a shared thread with [url]www.amibay.com[/url] which you can [URL="http://www.amibay.com/showthread.php?t=…
... my fellow [B]WoS'ers[/B]
[B]This is a shared thread ... ?t=39097"]see here[/URL][/B]
I don ... t often get to do a Show and Tell as ... games!
[B]So would you like to ... you Spectrum +2AB or +3 ?[/B]
Then let ... -
Elite - Sides A & BAccording to [URL="http://www.worldofspectrum.org/forums/showthread.php?t=44498"]this thread[/URL], it seems the original tape of [URL="http://www.wo…
... side (different ships), so side B should also be preserved (Elite ... includes a 48K version in side A and a 128K version in side B). -
Hooky - hook ZX ROM and rewire RST and NMI to RAM - rantThis is a rather long rant. Not for short tempered. :) The objective is to hook into RST "vectors" and NMI on a Spectrum without affecting the normal…
...
QUESTION: disclaimer ... ROM overwrites address FFFD thus ...what ... B,A ; B=0
0x11CC LD A,#0x07 ; A=0b00000111
0x11CE OUT (FE),A ... white?
0x11D0 LD A,#0x3f ; ROM end 0x3f (ff)
0x11DF CP H ; a=3f (ROM TOP)?
0x11E0 JR ... -
Name of a game (again...)Big hellos to everyone in the [B]Spectrum community[/B]! You guys must be [I]sick[/I] of this type of posts by now, but here's another one. I rememb…
... to everyone in the [B]Spectrum community[/B]!
You ... another one. I remember a game from when I was ... a kid, and don't ... guess having screenshots would be a [B]huge[/B] load on the server ... screen of the game was a tough guy on his ... -
+3 floppy drive commands for drive b:Hi, I successfully rigged up a 3.5" floppy drive(a chinon fz 357 w/jumpers), a modified external dc power supply *thanks to Mr. J. King for the diagr…
... boot up shows:
Drives A: , B: and M: Available.
When ... I try to save a program to drive B:
Using save ... the 3.5" disk in B: (format "b:") so I'm positive ... line.
i.e. save "b:"...."program.***"...
thanks
IM2 Machine Code Sprites Example Code Using Char Based SystemFurther to my earlier post, here are sprites running using char method with IM2 driving it Note, for 48k spectrum using TASM [code] ; ***********…
... ;interrupts. Jump to 0056 in ROM
jp 56 ;for smooth ... br /> WChar:
INC B
LD A,B
CP RECTBOTTOM
RET NZ
LD A,RECTTOP ...The incredible shrinking screendumpIn this topic I stated that I would be impressed if the screendump could be smaller than 37 bytes. [url="http://www.worldofspectrum.org/forums/viewt…
... dec b ; B becomes 0 after 256 times
ld b,(hl) ; B = ... 1ff8 ; Do last carriagereturn in ROM
inc hl ; Goto ... disables carry
add a,b ; A always hold 255 so DEC ... /> call #22b0 ; Save A in B and calculate screen
...A festive joke............[B]Q:[/B] What do Santa Claus and Michael Jackson have in common? [B]A:[/B] [I]They both leave kid's bedrooms with empty sacks.[/I] .......a big t…
[B]Q:[/B] What do Santa Claus and Michael Jackson have in common?
[B]A:[/B] [I]They both leave kid's bedrooms with empty sacks.[/I]
.......a big thankyou to my brother-in-law for that one!
Tobo.How to put up a SCREEN$ - VB6 only.I'm making a little [B]Opus Discovery[/B] floppy image creator/viewer (thanks, [B]Obo[/B]!). It is made in... VB6 (sorry, don't know any "real" langu…
... a little [B]Opus Discovery[/B] floppy image creator/viewer (thanks, [B]Obo[/B ... most of the [B]Program:[/B] and [B]Bytes:[/B] managing, displaying and ... I'd like to add a [B]SCREEN$[/B] viewer.
a [B]StdPicture[/B] from a 6912-byte binary ...Pimp my code...Erm, this is just the result of a mental exercise - I wanted to repeatedly display a UDG but decided against using a ROM routine and UDGs! Any sugges…
... repeatedly display a UDG but decided against using a ROM routine and ... /> loop push bc
ld a,b
cp #08
... jr cpy
odd ld a,#54
jr cpy
ld (hl),a
ldir
pop ...Urgent Help needed to fix this: calling all machine code gurusI am currently trying to write tutorials on the amazing Orfeus music composer by Proxima which allows you to do multi channel music through the beepe…
... must be some call to ROM
dec sp
dec bc
ld a,b
or c
ld a,b
and a
jr ... b
adc a,e
ld a,b
adc a,e
ld a ... ,l
adc a ...B: drive dont workHi all, I went to Maplin today got myself a DIY lead the one with the proper 34 way edge connector for the Spectrum+3 other end 34 way to floppy driv…
... The Spectrum sees
Drives A: B: and M: available.
... I can cat "a:" and see what is on ... Also when I cat "b:" the A: drive spins continuosly, I ... have disconnected the A drive and still nothing, ... sees the A: and B: drive all though the A: drive ...switchable ROM`sHi all, As I own a few Spectrum and Commodore computers, I am wandering a few years ago on the C64 there was a switchable ROM the normal C64 and a Ji…
... all,
As I own a few Spectrum and Commodore computers ... a switchable ROM the normal C64 and a Jiffy DOS ROM.
A flick of a ... .
Is there such a thing for a Spectrum? (not meaning Jiffy ...Help with a PSP?I've just become the proud owner of an old Sony PSP, which comes with the mains lead and nothing else, and is missing the thumbstick cover (but the t…
... don't you need a game disc (a "UMD" thing?) as ... or can you just use a magazine coverdisc (I think I ... " in the above might be a "B", or vice versa - it' ... Spectrum/C64/Atari ST emulators, a good text viewer, and ... PSP, other than playing a couple of games on it ...3.5'' Amstrad floppy on a +3 ?Hi guys, i bought a 3.5'' drive for an Amstrad 6128, from a guy here in Greece (he makes them) [url]http://img247.imageshack.us/img247/5594/amaffvrgs…
Hi guys,
i bought a 3.5'' drive for an ... Amstrad 6128, from a guy here in Greece (he ... excellent drive, it has side A/B switch, Primary on/off switch ... , it has a pass through for the 5V ... is, can it work on a Spectrum +3? The +3 has ...yet another jerk of a teacher...Remember I told you guys some time ago about me going back to college, and how a teacher had flunked me because I was friends with some other teacher…
... to college, and how a teacher had flunked me because ... charge showed me a paper where I had a ZERO for ... not atending classes, and a papper writen by the teacher ... br />
the son of a b... I know i didn't ... now I've sent him a somewhat polite "what the hell ...I'm a WOSBO[SIZE="7"][FONT="Arial Black"]W.O.S.B.O ![/FONT][/SIZE] [SIZE="3"]No I have not got a World Of Spectrum Behavioural Order. I am a [B][COLOR="DarkRed…
... Order.
I am a [B][COLOR="DarkRed"]W[/COLOR]orld ... S[/COLOR]pectrum [COLOR="darkred"]B[/COLOR]eard [COLOR="darkred"]O ... decided to grow a [B][COLOR="Sienna"]beard[/COLOR][/B].[/SIZE][SIZE="3 ... "]I've never had a beard ...
