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BeepFX ProblemHi All, I'm currently trying to integrate the BeepFX engine in my 100% Assembler Game and it plays the sound fine, but then plays the sound again, a…
... /> ld a,h
SFXRTDUTY: cp 0
sbc a,a
... /> ld d,e
inc hl
ld a,h
... and 1FH
ld h,a
... -
Graph Plothi! please, help with code: [PHP]For x=-100 To 100 For y=-100 To 100 If (x/2-25)*(x/2-25)+(y-50)*(y-50)<200 Or (x/2+25)*(x/2+25)+(y-50)*(y-50)<200 th…
hi! please, help with code:
[PHP]For x=-100 To 100
For y=-100 To 100
If (x/2-25)*(x/2-25)+(y-50)*(y-50) -
Elliptical ChallengeSubsequent to the recent "Graph Plot" thread, I wrote this general purpose ellipse drawing routine which will plot (although it doesn't actually use …
... /> ld (STKENDO),ix
ld d,(ix-3)
ld e ... a,c ;A =h
add a,(ix+2) ;A =h+a
ld b,a ;B =h+a (x ... -
Multiface One MF I and Plus D +D and Spectrum 48kHi, I have an 48k Speccy. And a Plus D Interface. Now I want to use it together with a Multiface One, but it seems I can only have the MF1 oder th…
... have an 48k Speccy. And a Plus D Interface.
D Interface,
not both ... someday have read about a hardware-mod for
D-Interface.
... working together with the MGT +D ?
Regards,
checksum routine from Space GunThis routine starts off with HL=$ffff and a file header read from tape, for each byte of which in turn it assigns to A and calls this routine, ending…
... ]
LD C,A : XOR H : AND $f0 :
LD D,A : RRA : RRA ... : RRA :
LD B,A : RRA : XOR H : AND ... A,B : XOR H : XOR E
LD H,A : LD A,B : RLA : XOR D ... : OR C
LD L,A ...Plus DI would like to get a Plus D disk drive interface for use with a Spectrum 128 I plan on acquiring in the future (I don't have the patience to use an …
I would like to get a Plus D disk drive interface for use ... with a Spectrum 128 I plan ... of my Christmas money on a PS Vita). Problem is, my ...Plus D Voltage Regulator OrientationHi, I?ve got a Plus D Disc Interface circuit board without case from a friend. Sadly he sends it to me without care for proper packaging. So it arr…
... />
I?ve got a Plus D Disc Interface circuit board without ... case
from a friend. Sadly ... verify how I must install a newly buyed voltage regulator.
Speccy collection prepping for sale - Pics includedHi guys, I made a post a while back about having to shift my sizeable collection due to incoming sprog. I gave up typing up the names, so I'm going…
... />
I made a post a while back about having to ... to have them all photo'd in the next hour ... Knight Tyme
L.E.D Storm
Las Vegas Video ... /> SU 10 Pack - Android, H.A.T.E, Cyclone, TLL, Alien ... 10th Frame, How To Be A Complete Bastard,
Your ...Rotronics Wafadrive v.1.80 ROM - Corrupt or purposely broken?I've been digging around the Wafadrive v1.80 ROM (from [URL="http://zxspectrum.it.omegahg.com/_RO.htm"]here[/URL]) and can't decide if the ROM is cor…
... codes were supported, so had a quick go at disassembling - apologising ... ; hook-code-error
add a, a
push de
ld ... hl
ld e, a
ld d, $00
ld hl ... )
inc hl
ld h, (hl)
ld l, e ...A FAQ from a Z80 datasheet may reveal some up-to-now unknown behavioursA fellow member of the zonadepruebas.com forum has just mailed this PDF to me. [url]http://www.atc.us.es/~rodriguj/zilog_z80_faq.zip[/url] It's an e…
A fellow member of the ... /> It's an exceprt from a 1995 Z80A datasheet. This FAQ ... you do cycle step on a NMOS o CMOS chip?
- What happens if a NMOS Z80 suffers a negative spike? (those pesky ... of interrupts during a LD A,I or LD A,R instructions? (this ...My Spectrum +2, Multiface 128 and Plus D....Here's something that's always bothered me and had me wondering if anyone else experienced the same thing - Back in 1990 or so, when I finally manag…
... to muster the funds for a Plus D interface and Disk Drive ... up properly with the Plus D attached, and it would take ... , and then plug the Plus D into the passthru port. Then ...Games that will be 25 years old this year!Time for my yearly attempt at making everyone feel ancient! :D [url="http://www.worldofspectrum.org/infoseekadv.cgi?what=1®exp=&yrorder=1&year=19…
... at making everyone feel ancient! :D
[url="http://www ... Clock
Hard Drivin'
H.A.T.E.
Heartbroken
The Running Man
A Shadow On Glass
Shanghai ...Math Quiz - MultiplicationThe topic is fast multiplication routines, from 8x8 to 32x32 and all points in between. These functions sit underneath floating point libraries, gen…
... /> sorted:
ld h,a
; h = smaller 8-bit multiplicand ... ,e
xor a
ld d,a
; eliminate leading ... />
ld a,h
ld h,l
ld l,d
Classic Games that you've never playedThe name says it all: what games have you never tried, but want to H.E.R.O Beneath a Steel Sky Mario 64 Golden Eye Resident Evil Zero Half-life Ha…
The name says it all:
what games have you never tried, but want to
H.E.R.O
Beneath a Steel Sky
Mario 64
Golden Eye
Resident Evil Zero
Half-life
HalloGhosts n' Goblins loaderI'm trying to put Ghosts n' Goblins onto a +3 disk but struggling to understand the mc loader. Basic loader [code] ink 7 : clear 25000 : load "" cod…
... A, H
65178: XOR L
65179: LD H, A
65180: LD A, D ... A, H
65425: XOR L
65426: LD H, A
65427: LD A, D ... /> 65502: INC A
65503: XOR D
65504: XOR H
65505 ... : LD A, (DE)
Several software titles, maybe interesting for preservation purposes?I don't know if this is an appropriate post in the appropriate forum, but this is my question. I have about 40 ZX Spectrum games and other software …
... is to put them on a Dutch website for second hand ... who are interested can have a look at it. Or is ... )
Hotch potch
H.U.R.G.
Jet Pac (2x ...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…
... /> 0x0000 DI
0x0001 XOR A ; A=0
0x0002 LD DE ... /> 0x11CC LD A,#0x07 ; A=0b00000111
0x11CE OUT (FE),A ; border to ... incl. 0x11D9
0x11DA LD H,D ; HL = DE (0xffff)
0x11DB ... =HL-1
0x11DF CP H ; a=3f (ROM TOP)?
0x11E0 ...Help with Manic Miner tweaksPlease. :) This is the Software Projects version, simply as I had it to hand. [B]Problem 1:[/B] I've learned a bit (actually quite a bit) and manag…
... learned a bit (actually quite a bit) and managed to find a few ... ; 36823 32 17
LD A, (L32877) ; 36825 58 109 128 ... ; 36829 32 11
LD A, (L32911) ; 36831 58 143 128 ... /> Unless its the "Compare H" ? Again I'd like to play with ...Better arrangement for video memory?While doing some documentation work for the ZX-Uno project, I compared the advantages of the weird layout of the ZX Spectrum against a linear layout.…
... ld (de),a
inc l
inc d ;move to ... pixel
LD B,A
AND A
RRA
LD H,A
LD A,C
RLCA< ... and a
rra
ld h,a
ld a,c
and $F8
ld l,a ...Amusement ParkCast your minds back a decade or so... Longer-serving members here may well remember the 2003 minigame contest where the idea was to write a game in…
... Amusement Park 4000 came a respectable second, pipped to ... that I subsequently produced a second reworked version for ... with SjASMPlus, I had a quick play. The ... remembered, the graphics are a little different here and ... as you can on R&D.
Charge as ...Giant software bundle on EbayTonight an auction starts for a giant Spectrum software bundle on Ebay. More than 50 cassettes! Titles are: Hard Drivin, Knightmare, BMX Racers, Cra…
Tonight an auction starts for a giant Spectrum software bundle on ... , Marie Celeste, Auto Chef, H.E.R.O, Elite Hit Pak, Doctor ...New Game: UNA EXTRA?A HISTORIA[color=#0000FF][b][SIZE="5"]UNA EXTRA?A HISTORIA[/SIZE] [SIZE="3"]by J.B.G.V[/SIZE][/b][/color] An epic adventure where you have to find a lost…
... ][b][SIZE="5"]UNA EXTRA?A HISTORIA[/SIZE]
... you have to find a lost object, picking up ... />
There are a few minigames in the story ... /> W-advance
A-left
D-right
N-fire ... /> If you have to manage a shooting star:
ANN: Tipshop updated Tuesday, 30 December 2014Tuesday 30 December 2014 Merry (belated. Ed) Xmas, folks - I hope Santa was good to you! * Andy Ryals provided POKEs for Escape from Colony 8 and M…
... 8,
H.E.R.O., How to be a Hero, Mystery, Sir ... ,
Spell of Christmas Ice, A, Un Dos Azul and Xmas ...Games that will be 10 in 2015!Time yet again to make some of you realise just how fast time is passing us by as I show a list of games that are going to be 10 this year! :D [b]R…
... us by as I show a list of games that are ... to be 10 this year! :D
[b]Resident ... 2
F.E.A.R. (PC)
The Warriors ... this lot will also reach a decade! :o
[b ...2TB Drive Dieing.Well, after 5 1/2 years of service my humble Samsung Spinpoint 2TB drive has now issued several S.M.A.R.T warnings and has now been retired. I …
... issued several S.M.A.R.T warnings and has now ... I used to work for a publisher in Oxford, their ... the UK backbone, they'd give tours to big wigs ... was like (Sonically) being inside a Dyson hoover.
... So I have a retired 2TB drive that still ...Superfo Harlequin Rev D Documentation wantedI have a Rev D Superfo Harlequin PCB. I would like the documentation (schematic and board layout files), but I get a [b]Not Found[/b] error when I cl…
I have a Rev D Superfo Harlequin PCB. I would ... layout files), but I get a [b]Not Found[/b] error ... />
Does anyone have a link to a copy of the documentation ... ? If yes, please send me a message and I will send ...Name the game pleaseCan you help to define a game? Loading screen -possibly- contains battle tank or fighter. Music is something like this, [url="https://yadi.sk/d/rKcu…
Can you help to define a game? Loading screen -possibly- contains battle tank or fighter.
Music is something like this, [url="https://yadi.sk/d/rKcuxSmqki9v7"]try to play[/url].
P.S.
This is not a H.A.T.E.Add with Carry ExampleHi, I have been really struggling to understand this simple example from Mastering Machine Code and I wonder if anyone can help? I have include…
... /> LD L,A ;L = AE
LD A,H ;A = C7
ADC A,D ;A = C7 ... + 85 = 14C so A set to ... set
LD H,A ;H = 4C
LD B,H ;B = 4C
R registerI'm cross-posting this as a spin-off of a [url="http://www.worldofspectrum.org/forums/discussion/52748/zx-spectrum-cartridges/p2"]thread in "Hardware…
...
The Z80 CPU contains a memory refresh counter, enabling dynamic ... programmed, resulting from an LD R, A instruction.
The data ... fetch. Hence R register can be considered a simple counter ( ... ), increment twice for "LD A,R" instruction, and once for ...Z88DK NOOB cplot INK colorHi I am a complete NOOB with Z88DK, I am trying to draw colored circles. How does ink, paper and border work with Z88DK. I started trying to wo…
... :
ld a,7
and d
ld b,a
inc ... b
ld a,e ... /> xor e
ld h,a
ld a,d
xor l
