-
Fixed point math lib?Is there a liberally licensed fixed point math lib for z80 somewhere? When searching, I expected to find a bunch of GPL'd ones and perhaps one or two…
... do quick multiplication. It uses lookup tables to get quick access ... -
Fixed point math lib?Is there a liberally licensed fixed point math lib for z80 somewhere? When searching, I expected to find a bunch of GPL'd ones and perhaps one or two…
... accurate so we had a lookup table of values then multiplied ... (1024/b) bit was a lookup and then used the multiplication ... -
Spectrum Screen RAM layoutHi there The spectrum screen layout is rather odd. It seems to be arranged into 3 256 byte groups. If I have an x (horizontal) coordinate (from…
Personally, I just use a lookup table to the start of each scanline - wastes some memory, but "slightly" faster.. -
Compression comparisonsI did some comparisons of different compression methods. To make this relevant to zx spectrum, I first gathered a corpus of relevant data: 6660 .TAP …
... spectrum ROM as an additional lookup - it doesn't fare too ... -
Compression comparisonsI did some comparisons of different compression methods. To make this relevant to zx spectrum, I first gathered a corpus of relevant data: 6660 .TAP …
[quote="Sol_HSA;845237"]I made an experimental compressor that uses the spectrum ROM as an additional lookup[/quote]
There are different ROMs on different machines, so this idea is a dead end. -
Variable sized tiles /tile routineHow would you do a variable sized tile routine where the tiles have position variables too? Thanks would be interested to learn :)
... not when i use the lookup table. thanks :)
[code ... -
Variable sized tiles /tile routineHow would you do a variable sized tile routine where the tiles have position variables too? Thanks would be interested to learn :)
... read the variables from the lookup table and then print at ... and the graphic in the lookup table.
Please can ... -
Knight Lore disassemblyHi, Not quite sure if this belongs here or in "Games" but figured it's more likely that developers would be interested. I've just released the …
... starts, which gets overwritten by lookup tables. I was just thinking ... -
Let's copy buffers!Figured I'd do some double buffered graphics, so I can render for several frames before displaying stuff. Yes, I mean on a 48k speccy, so no 128k spe…
... ]
org 32880
; lookup table (IMPORTANT: entire table must ... 1), hl
ld hl, lookup
jr next
; read next screen address from lookup table
next:
ld ... -
Let's copy buffers!Figured I'd do some double buffered graphics, so I can render for several frames before displaying stuff. Yes, I mean on a 48k speccy, so no 128k spe…
... don't want to restrict lookup table location:
... be located anywhere)
lookup:
REPT 18, ROWREPT ... hl
ld hl, lookup
jr next
... ; read next screen address from lookup table
next:
... -
Let's copy buffers!Figured I'd do some double buffered graphics, so I can render for several frames before displaying stuff. Yes, I mean on a 48k speccy, so no 128k spe…
... /> ; read next screen address from lookup table
next:
ld ... ]
[code]
IF lookup & #01
inc hl ... -
Let's copy buffers!Figured I'd do some double buffered graphics, so I can render for several frames before displaying stuff. Yes, I mean on a 48k speccy, so no 128k spe…
... /> ; read next screen address from lookup table
next:
ld ... ]
[code]
IF lookup & #01
inc hl ... -
Hardware databaseWe don't currently have a comprehensive list of hardware, so will be looking at adding one. So, what categories? Do we count the new machines as …
... Connectors/Cables details (the quick lookup)
11 Piccies (without category ... -
Bored of the Rings coded messageI was browsing [url="https://tcrf.net/"]The Cutting Room Floor[/url] recently and stumbled upon the entry for [url="https://tcrf.net/Bored_of_the_Rin…
Does the game itself use some compression method for text which these could reference? Some kind of lookup table that maps a byte to a group of letters? -
Spectranet UsersHi! I'm testing Spectranet interface on Fuse and I'm thinking on emulating spectranet on ZEsarUX. Some questions: 1) Are there many active Spec…
... things requiring trig functions use lookup tables. The server keeps the ... -
Database model ZXDBRecently, I have been trying to figure out how to provide my contribution to whoever takes over WoS archive rework next... So I came up with this: …
... programs table. Instead make a lookup table which details what the ... -
Database model ZXDBRecently, I have been trying to figure out how to provide my contribution to whoever takes over WoS archive rework next... So I came up with this: …
... programs table. Instead make a lookup table which details what the ... -
Let's copy buffers!Figured I'd do some double buffered graphics, so I can render for several frames before displaying stuff. Yes, I mean on a 48k speccy, so no 128k spe…
... out how to generate the lookup table, and I may still ... -
Proportional fontsI've been doing some proportional font drawing, purely on C level at the moment, but it's orders of magnitude slower than I'd want it to be. It's sti…
... to spend several Kb with lookup tables just to make it ... -
Proportional fontsI've been doing some proportional font drawing, purely on C level at the moment, but it's orders of magnitude slower than I'd want it to be. It's sti…
Well, that bit could be solved by a simple lookup table to the char offsets.. -
Database model ZXDBRecently, I have been trying to figure out how to provide my contribution to whoever takes over WoS archive rework next... So I came up with this: …
... tmp_nvgs
* tmp_utilities
* turntypes -- lookup table for entry turn types ... , publishers, authors
* wos_refcodes -- lookup table of reference codes (looks ... like referencetypes)
* wos_specials -- lookup table of miscellaneous tags
Full-screen 32 columns bicolor engine NIRVANA+I'm glad to announce the release of [b]NIRVANA+ ENGINE[/b], providing support for bicolor graphics (multicolor 8x2) in 32 columns for all standard Sp…
[quote="colonel32;892308"]Hi Einar. I'm trying to figure out a formula that takes a NIRVANA+ line and column, and returns an 8x2 attribute address.[/quote]
The attribute address is:
[b]race_raster + (lin-16)*82 + deltas[col][/ ...Database model ZXDBRecently, I have been trying to figure out how to provide my contribution to whoever takes over WoS archive rework next... So I came up with this: …
... trivial operation. A simple hashmap lookup is enough. Remote communication with ...z80 Helper?When you are programming with z80 do you get 'lost' you are in the middle of making a routine and you can't remember which registers are holding val…
... ordering is being used to lookup a jump point in a ...endless runner project..So I'm thinking of writing a small tutorial series on writing games for the speccy in C, and figured that an endless runner would be an easy example …
I haven't used C in years besides creating lookup tables and the sort when doing demoscene stuff. This sounds like a fun little project and I'll be following along for sure. :)z88dk sp1lib with fzxThe numbers dont seem to display properly? fzx by itself works [quote] // for targets supporting fzx // zcc +zx -vn -startup=31 -O3 -clib…
... /> ...
[/code]
The lookup function uses a table that ...The point of IX+1 IX+2 ?the numbers that you can add-on to IX and IY seem hardcoded, so I dont see the use of that feature? any examples of the use of IX and IY plus number…
Thanks, was wondering about this too. In the code I'm examining, it's being used in a sprite lookup table.An appeal to preserve InfoseekID compatibility!Instead of worrying about competition from other Spectrum sites, Martijn always supported them. He actively worked together with other sites to help …
... reality, there will be a lookup table between old id's ... follow on from there. The lookup is for backwards compatibility with ...
