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how does this multiplication routine work?taken from chuntey wordpress: imul ld e,d ; HL = H * D ld a,h ; make accumulator first multiplier. ld …
... e,d ; HL = H * D
ld a,h ; make accumulator first ... ; zeroise total.
ld d,h ; zeroise high byte so de ... -
z88dk multicolour enginesI've been trying to work out how the multicolour sprite engines have been implemented in z88dk. It's not obvious. Looking in the source, I found …
... stumble across the the bifrost h/l explanation in the Bifrost ... -
RA 167 - Colecovision[img]http://retroasylum.com/wp-content/uploads/2017/07/167.png[/img] Paul Davies & Dean Swain play one of the hottest consoles of the early 1980’s…
... :
Richard Pipes
Nick Lees
Edward Fitzpatrick
Alistair Downs
Nick Lees
Retromash
Duncan ... -
Flood Fill IssueHi Folks, Came across the following Flood Fill routine by John Metcalf: [code]; scanline fill by John Metcalf ; call with d=x-coord, e=y-coo…
... 60071 AB
ld h,a 60072 67
... br /> 140 READ H$
150 IF H$="XX" THEN GO ... 160 PRINT "Hex ";H$;" ";
170 LET H= CODE H$(1)
180 ... LET D=16*(H-(48 AND H64))
... 190 LET H= CODE H$(2)
200 LET ... -
z88dk adventure problemI downloaded the example https://drive.google.com/file/d/0B6XhJJ33xpOWaHYxek15WXJyQVU/view?usp=sharing I changed NUM ROOMS to 13 here is the who…
...
[quote]#include "rooms.h"
extern const unsigned ... -
Cover artistsI love many games inlays and adverts. In some cases are made by not very known people, and I think their names should be preserved. Why not having…
... )
- Cabal (Ocean)
- Chase H.Q (Ocean)
- The New ... -
RA 170 - Emulation[img]http://retroasylum.com/wp-content/uploads/2017/09/170.png[/img] Steve Erickson & Matt Wilsher delve into the tricky topic of emulation and di…
Custom Menus on the ZX Spectrum +3Today, my Friends, i have the pleasure of presenting a program i have written which gives a set of custom menus on the +3. The main features of my p…
... .org/pub/sinclair/games-info/h/HiSoftDevpacV4.1.pdf"]HiSoftDevpacV4.1 ... .org/pub/sinclair/games-info/h/HiSoftDevpacV4.1_Plus3VersionNote.pdf"]HiSoftDevpacV4.1_Plus3VersionNote ...Something my dad did for me...Today, what's left of it, is what would have been my dad's 75th birthday, but he never made it past 50. Here's something he did for me, other than…
... get from Boots or W.H. Smith, these were usually C90 ...Detecting +3 / +2AWhat's a simple but reliable way to detect if code is running on a +2A/+3? My first though was to try switching to ROM2 and then checking for the …
... +2A/+3
out (c),h ; change to page 1? (upper ...How to load assembly language programs onto a ZX SpectrumHello, I have recently started learning Zilog assembly for the ZX spectrum, and have written a game and some simple programs. These all work fine in…
... (hl), 255
inc h
ld (hl), 129
inc h
ld (hl), 129
inc h
ld (hl), 255
New version: LOST IN MY SPECTRUM v2.0Hi everybody! Here is my New Year's gift to you: the new version of my first Spectrum game ever, [b]Lost In My Spectrum[/b]. The objective is simp…
... = left, W = right, M = jump, H = hold.
48K (multiload ...Got Myself a 128K “Toast Rack”! (Plus a simple audio fix guide.)I got myself a 128K Spectrum off of eBay the other day. It’s in pretty good nick, but the membrane went the way of the dodo sometime during shipping …
... . It’s in pretty good nick, but the membrane went the ...RAD for SpeccyJust wanted to share a fine technique of rapid app development for ZX Spectrum in C. Programming without debugger is a pain. It comes down to needing…
... = y; bmp_rect.w = w; bmp_rect.h = h; // OPTIMIZE: rearange params to be ... /> y2 = intersect.y + intersect.h;
int startLine;
while (line < intersect.h)
{
// Calculate ..."In nihilum reverteris": a new big text-adventure 128K in English languageHi guys. "In nihilum reverteris" - another text-game / interactive novel by Yerzmyey. Platform: ZX Spectrum 128K or higher. (C) 2018 by H-PRG.…
... higher.
(C) 2018 by H-PRG.
DOWNLOAD: ... , music and graphic by Yerzmyey/H-PRG.
Code and ... fonts by Hellboj/H-PRG.
Coding help ... and English language help - Gasman/H-PRG.
Scientific consultation ...ZXBaremulator v3.H(ikoki) BetaHi, Thanks to a Recreated ZX kindly donated by Hikoki, I've added support for it to ZXBaremulator. Now two keyboards can be connected to the PI…
Hi,
Thanks to a Recreated ZX kindly donated by Hikoki, I've added support for it to ZXBaremulator.
Now two keyboards can be connected to the PI, one USB standard keyboard and a Recreated ZX keyboard. The RZX keyboard needs to ...A text-adventure for the RASPBERRY PIHi, we made a Rpi3 version of our ZX Spectrum 128uK game "In nihilum reverteris". Maybe somebody might be interested. DOWNLOAD: http://yer…
... /> Text and music by Yerzmyey/H-PRG.
Code by ... Hellboj/H-PRG.
Graphic by Habib ... ^Joulo/H-PRG.
English language help ... - Gasman/H-PRG.
If ...Random-Access to Microdrive FileI am working on a BASIC program to backup a microdrive text-file to standard tape array-file. To backup a text-file from one microdrive to a secon…
... br /> POKE defadd+1,FN h(udg):
LET s$=a ... DATA FN l(buf),FN h(buf)
1312 ...
POKE defadd+1,FN h(udg):
LET s$= ... /> POKE defadd+1,FN h(udg):
LET a ... /> POKE cha+12,FN h(511)
1430 PRINT ...Prportional Ascii text scrollerA couple of years ago I wrote a little scroller that nestles at the top of RAM (FFCA - 65482) and scrolls standard Ascii encoded text from anywhere y…
... db 7ch,20h,20h,9ch ;h
db 0dch ;i< ...
scroll:
ld h,51h ;line address
inc ... /> djnz scr_lp1
inc h ;next line down
db ...New game: Pooper ScooperAvoid the baddies, clean up the crap, different characters have different abilities that need to be employed to complete the levels. Keys QAOP and…
... />
Keys QAOP and space, H to hold, M for music ...ANN: Tipshop updated Saturday, 03 November 2018Saturday 03 November 2018 Happy "Eat All Of Your Kids' Halloween Sweets" week! There's lots of good stuff this update - keep up the good work, folks…
... Said, New York Warriors,
Nick Carter, Not the Lord of ...
