Search found 388 matches

by JRoatch
Mon Nov 25, 2019 9:16 pm
Forum: NESdev
Topic: NTC: compression for short strings
Replies: 12
Views: 1106

Re: NTC: compression for short strings

I'll just note the difference between the stats of DTE (from tepples and I) are due to different default parameters of the versions we have (use all available code-points vs using only the top 128).
by JRoatch
Mon Nov 25, 2019 3:56 pm
Forum: NESdev
Topic: NTC: compression for short strings
Replies: 12
Views: 1106

Re: NTC: compression for short strings

For comparison, 2 other text compression formats specifically made for the NES in mind, Brad Smith's huffmunch , and Recursive DTE . |=========================================== |Algo | Compressed size | % |huffmunch | 15377 | 44 |Recursive DTE | 18787 | 53 |=========================================...
by JRoatch
Sun Oct 13, 2019 7:30 pm
Forum: nesdevWiki
Topic: SVG file not rendering
Replies: 1
Views: 2030

Re: SVG file not rendering

As casually documented, this has been broken since forever (or at least from 2013). I failed to report this issue when I found out about it back in 2014.
by JRoatch
Wed Aug 21, 2019 8:20 pm
Forum: NESdev
Topic: 8bitworkshop - online IDE now supports NES
Replies: 19
Views: 12283

Re: 8bitworkshop - online IDE now supports NES

I also instantly recognized the font (and the entire order of the chr sheet.)
by JRoatch
Thu Apr 11, 2019 9:27 pm
Forum: 2017 NESdev Competition
Topic: Action 53 volume 4
Replies: 72
Views: 69823

Re: Action 53 volume 4

So as I was working on a potential Volume 5 an idea came up were Volume 4 could actually be the combination of compo 2017 and 2018. The upside of this would be that compo 2018 can make it to physical release sooner, the downside may or may not be that this Volume 4 would be delayed due to having to ...
by JRoatch
Thu Apr 11, 2019 9:12 pm
Forum: Homebrew Projects
Topic: Work-thread of a Volume of Action 53 with 53 Games
Replies: 33
Views: 38053

Re: Work-thread of a Volume of Action 53 with 53 Games

Wow, I've let time slip by me at an unacceptable rate lately. I really have nothing much to show. My attempt at a compo entry failed to meet it's deadline, then I got distracted with programing traditional C programs. Last month I wanted to get back on track by compiling a focused list of games, so ...
by JRoatch
Mon Apr 08, 2019 7:22 pm
Forum: General Stuff
Topic: What have you learnt most from programming in assembly?
Replies: 28
Views: 18917

Re: What have you learnt most from programming in assembly?

My very first exposure to assembly was with single stepping instructions of a hello world program in the debugger of CodeWarrior on Mac OS 8 (Pre OSX). I decided that 68k was easier to read then PowerPC and went on to more exciting (to me at the time) things like viewing the resource fork of files. ...
by JRoatch
Wed Apr 03, 2019 3:51 pm
Forum: NESdev
Topic: Adapting Sik's UFTC graphics compression
Replies: 11
Views: 7183

Re: Adapting Sik's UFTC graphics compression

I'm curious as to what ByteOff19 looks like that'd make UFTC solid do so well. Are there a lot of solid tiles or tiles with two or three solid quadrants? It's literally 80% solid black tiles. Sorry to disappoint. Both UFTC and XFTC top 128 do well on this one. Perhaps the reason I saw so few matche...
by JRoatch
Wed Apr 03, 2019 2:10 pm
Forum: NESdev
Topic: Adapting Sik's UFTC graphics compression
Replies: 11
Views: 7183

Re: Adapting Sik's UFTC graphics compression

a heavily modified RLE codec (Donut). That's like saying PNG is a heavily modified DEFLATE codec. So I ran your scripts through some sets that I had. ByteOff19 (5996544) uftc twobyte:3286364 top128:1787254 top256:2237960 solid:1255772 xftc twobyte:3308448 top128:1809359 top256:2266533 solid:1415212...
by JRoatch
Wed Mar 20, 2019 3:02 pm
Forum: Homebrew Projects
Topic: First official NESmaker development competition
Replies: 2
Views: 5898

Re: First official NESmaker development competition

The competition is over and the old link to submission instructions is no longer available.
Entries are now playable at http://arcade.thenew8bitheroes.com/ (Currently an iframe to http://vizivasoftware.com/nes/)
by JRoatch
Fri Mar 08, 2019 9:08 am
Forum: 2017 NESdev Competition
Topic: Action 53 volume 4
Replies: 72
Views: 69823

Re: Action 53 volume 4

Found and fixed a small bug where if you start Coredump from Power on (by holding A and B), it'll load garbage graphics from a unmapped bank.
by JRoatch
Thu Mar 07, 2019 9:21 pm
Forum: NESdev
Topic: Is this available anywhere? (Homebrew ROM to display memory)
Replies: 4
Views: 3486

Re: Is this available anywhere? (Homebrew ROM to display mem

Action 53 Volume 3 from INL contains coredump, and is currently available for purchase. With it, just hold A and B when booting the NES to show unitialized memory. Though if you wanted to investigate the games themselves instead of the system, it's best to use the debugger in Mesen which has a menu...
by JRoatch
Fri Feb 15, 2019 4:58 pm
Forum: Homebrew Projects
Topic: Donut NES CHR compression
Replies: 10
Views: 11485

Re: Donut NES CHR compression

Anyway I went ahead made some breaking changes in the basic block format, and edited the first post pointing to the current new locations.

I also managed to complete the C version of the encoder, and I really like the 1200x speedup compared to the python version.
by JRoatch
Fri Feb 08, 2019 7:23 pm
Forum: 2018 NESdev Competition
Topic: Critical Match
Replies: 15
Views: 10917

Re: Critical Match

For what it's worth, the ROM I got from following the link in the first post is only 16k. It also looks like a new build.
by JRoatch
Wed Feb 06, 2019 8:35 pm
Forum: Homebrew Projects
Topic: Donut NES CHR compression
Replies: 10
Views: 11485

Re: Donut NES CHR compression

slembcke wrote:Donut isn't really an archival format. Why worry too much about breaking changes?
True.
It's from a mental habit I picked up from reading too many data format documents.