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Disable interrupts?Well, I've read the bits from the David Webb book about interrupt modes and (vaguely) appreciate the principles behind having a vector table, after r…
... principles behind having a vector table, after reading a number of ... and there, just for printing score, lives etc.
Apologies ... -
Z80 instructions tableI could never find a complete z80 instructions table (including timings) that I really liked. All reference material I have is either incomplete, or …
... find a complete z80 instructions table (including timings) that I really ... to prepare a z80 instructions table exactly the way I always ... -
UridiumWhat do you folks think of [URL="http://zxspectrumgames.blogspot.com/2009/07/zx-spectrum-game-uridium-zx-spectrum.html"]Uridium[/URL]? For me it is …
Byte-order backbufferThis is a tool for Z80 coders who wish the Spectrum screen had a serial layout. It runs as an interrupt mode 2 service routine and uses POP and PUSH …
... /> ld a, 0x3b ; high byte of vector table
ld i, a ...The need of having a 257-byte table for IM2 routinesThis came from a discussion at the speccy.org forum. I have understood that the reason behind the 257-table for IM 2 routines is due to certain joys…
... the reason behind the 257-table for IM 2 routines is ... this: is the 257-byte table really needed for [B]new ... of kilobyte for the IM2 table, but if space begins to ... resource, would you sacrifice that table and assume that the low ...128kB snapshot on ZX48kBWhat is best way for 128kB snapshot loading on 48kB models ? Some Z80 snapshots are 128kB versions (Z80 v2 or v3) but contain 48kB games. Same proble…
New game: Mole Rat[IMG]http://i1142.photobucket.com/albums/n608/daveyboyhughes/loader-1.gif[/IMG] [IMG]http://i1142.photobucket.com/albums/n608/daveyboyhughes/ingamesc…
Computer and Video Games ArchiveI'm toying with a project at the moment, and starting to get backing. Before I continue working on it, it would be good to get feedback from the com…
... IMDB, as well as very high quality scans of inlays, magazines ... , but the running costs are high (for example, the building alone ... websites, magazines produced for sale, table top books, a shop, etc ...Rally Driver Hi-Score Challenge!!!I was looking for a game to aid [URL="http://www.worldofspectrum.org/forums/showthread.php?t=43476"]MickMog's thread[/URL] and discovered this little…
... .gif[/IMG]
Hi Score Challenge starts at[B][COLOR ...Arcade Game Designer 4Just released over at the AGD forums. New this time: Sprites can now be individually coloured using the SPRITEINK command. If 16x16 sprites aren't…
... the end of your jump table) and there are now 2 ... screen), double height text and score display routines and a window ...Cascading transistorsMiguel (mcleod_ideafix) alerted me on an aspect of a design I'm working on where I am cascading transistors, which may give problems. This is the par…
... .jpg[/IMG]
Truth table:
[CODE]
IN MID ...
T1 becomes a very high impedance input, isn't it ...Super Stuntman, Sky High Stuntman = series?Surely Sky High Stuntman ([url]http://www.worldofspectrum.org/infoseekid.cgi?id=0009417[/url]) follows on from Super Stuntman... right? ([url]http://…
Surely Sky High Stuntman ([url]http://www.worldofspectrum. ... />
The instructions for Sky High Stuntman even say "As SUPER ...z88dk and im2I set up a minimal IM2 mode so I can draw sprites for a laff [code] #include <string.h> #include <stdio.h> #include <im2.h> #include <stdlib.h> #in…
... im2 mode with interrupt vector table located at 0xd300
table with all 0xd4 bytes
high byte of pointer table location.
ld ... i,a ; set high byte ...Border Tron vector tableI've been trying to use the Border Tron border creator, but the vector table is created where code to my game is at (FE00 I think), how would I go ab…
I've been trying to use the Border Tron border creator, but the vector table is created where code to my game is at (FE00 I think), how would I go about relocating the vector table to say 30000 as I don't understand hex very well!hash function permutation tableI'm using a simple Pearson hash function to generate keys for a $(103,6) array using a 256-byte permutation table. How do I arrange the entries in th…
... using a 256-byte permutation table. How do I arrange the ... entries in the permutation table to avoid any collisions? As ... all the data table entries are known in advance ...Scrolling Bi-Colour Engine for 4-Player GamesJust putting this code up for people to have a look at. Far from finished. Should simply compile and run a bit of a demo. Only good for 128K and +…
... .
;Use interrupt table at 48640 (190*256) ... />
;Interrupt vector table to go at 190*256 ... /> ;Point interrupts to the table:
ld a,190
high number
table
REPT 8,int_sprite_attr_loop ...Help needed with calculating screen addressesCan anyone help me finally crack Jonathan Cauldwell's screen addressing calculator and, more to the point, is the reason I'm struggling because this …
... require an address look-up table. In doing this we need ... 64 pixels apart. As the high bytes of the 3 screen ... 64 to give us the high byte of the screen segment ... add the result to the high byte. That will give us ...Question to all of you ex-patsBefore the question, I must mention a few things... I left Portugal in 1995 when I was 17. Was young and foolish and left before finishing High Scho…
... foolish and left before finishing High School and came to the ... /apartment and the rent is high. I hear of WOSser ex ... do. All I have is High School and hands-on experience ... promoted, bringing more to the table...
On day I ...Interview with Daz Coombes, prolific pirate from 1987 onwardsIt's taken literally seconds to track down Darren 'Daz' Coombes, the local kingpin of the ZX Spectrum games piracy scene for Basingstoke. Daz took on…
... the main deck, hit the high speed dubbing button, and away ... is free, he knows the score.[/i]
How much ... indoor market, you know the score.[/i]
Well, thanks ...RGB video issue on +2 and +3. Signal high?I have a couple of +3's and a new +2a that arrived today. When I plugged in the +2a using my RGB lead from Retro Computer Shack I was reminded of a n…
... be a tad on the high side. Indeed the equipment I ... and have always suspected its high video levels).
I ...Uridium possible with more colour??Having seen the MSX version of Uridium mentioned in another thread I wondered if the Spectrum could produce anything similiar, and had a go at a mock…
... seen the MSX version of Uridium mentioned in another thread I ...Geometry Wars 3 - Hacked High ScoresSorry if this is old news, but I have just noticed that the high scores on every level of Geometry Wars 3 on the 360 have been hacked. i.e. they are …
... have just noticed that the high scores on every level of ... . i.e. they are ridiculously high scores.
A quick ...Games without score/status panelAfter the previous thread discussing decorative borders/status panels, and watching the recent Spectrum Show, I noticed that with the exception of th…
... 't use any sort of score/status panel at all:
score in the game.
score panel?New Spectrum Game... on Android!! Duel Day / High Noon<div><font face="Arial, Verdana"><span style="font-size: 13.3333330154419px; line-height: normal;">Hi everybody,</span></font></div><div><font face="…
... is a "remake" of the "High Noon" game, which is part ...New Spectrum Game... on Android!! Duel Day / High Noon<div><font face="Arial, Verdana"><span style="font-size: 13.3333330154419px; line-height: normal;">Hi everybody,</span></font></div><div><font face="…
... an actual "remake" of the "High Noon" game, which is part ...New Spectrum Game... on Android!! Duel Day / High Noon<div><font face="Arial, Verdana"><span style="font-size: 13.3333330154419px; line-height: normal;">Hi everybody,</span></font></div><div><font face="…
... an actual "remake" of the "High Noon" game, which is part ...funny seeing a spectrum mentioned in regard to a high street shop again..not sure if anyone else has picked it up http://www.argos.co.uk/static/Search/searchTerm/Sinclair+ZX+Spectrum+Keyboard.htm flash back to the 80…
... the ti99/4 in wembley high road LONG before the spectrum ...Mirror tableCan anyone help with a byte mirror table? e.g. so you can look up a byte of a left-facing sprite and return the correct right-facing value. There …
... help with a byte mirror table? e.g. so you can ... its mirrored value from the table using the H/L register ... 's got a byte mirror table to hand, please point me ...Games you envied on other systems (but were never converted to the Spectrum)I will admit it: there were times when I considered getting a Commodore 64. Not because I didn't love the Spectrum, but because Llamasoft games almos…
... : Uridium, Mercenary, Elite... then even ST stuff like Starglider, and high-end ...
