Search found 98 matches

by olddb
Fri Apr 03, 2020 10:33 am
Forum: NES Hardware and Flash Equipment
Topic: What is 'magic 0x555/0xAAA/PA programming sequences'
Replies: 6
Views: 205

Re: What is 'magic 0x555/0xAAA/PA programming sequences'

@lidnariq Thank you for the explanation and links. Those are extremely helpful. Later programmable memories instead use specific sequences of writes of specific values to mark that the final byte is "genuine". This seems to always be alternating sequences of bits. So the de-facto way to programs fla...
by olddb
Thu Apr 02, 2020 11:01 pm
Forum: NES Hardware and Flash Equipment
Topic: What is 'magic 0x555/0xAAA/PA programming sequences'
Replies: 6
Views: 205

What is 'magic 0x555/0xAAA/PA programming sequences'

Reading the wiki a came a across the term 'magic 0x555/0xAAA/PA programming sequences'.
As I understand, is a way to program a flash chip without a programmer???

Any info is appreciated.
by olddb
Wed Apr 01, 2020 11:02 am
Forum: 2019 NESdev Competition
Topic: SaveTheKuin: action-adventure
Replies: 19
Views: 4062

Re: SaveTheKuin: action-adventure

I got the sword. I then walked into a cave with arrows and then got shot and died. Some of the music notes last for too long and make everything seem to drag. It was hard to cut grass because the character felt like he was on a grid. Try a different route next time. Let me know how it goes. :P
by olddb
Fri Mar 27, 2020 8:42 pm
Forum: 2019 NESdev Competition
Topic: SaveTheKuin: action-adventure
Replies: 19
Views: 4062

Re: SaveTheKuin: action-adventure

Sorry for the late respond. I was MIA. Once again, thanks for your suggestion and time. Some of your suggestions I have already implemented into version 02! So please, play that if you can. I have some other suggestions: 1. I'm not sure whether the shadows behind the trees look so good. Maybe you sh...
by olddb
Thu Mar 26, 2020 7:08 pm
Forum: NESdev
Topic: 6502: Index to bit index
Replies: 8
Views: 433

Re: 6502: Index to bit index

Thanks you all for the replies. A table it is.

BTW, why does wla give an error for this:

Code: Select all

table:
.db 00
lda table,x
I'm used to using the y reg when reading from tables.
by olddb
Thu Mar 26, 2020 11:39 am
Forum: NESdev
Topic: 6502: Index to bit index
Replies: 8
Views: 433

6502: Index to bit index

Is there an elegant way to turn an index into a bit index(value), for clearing and/or setting?

I know I could use a loop or a table. Any other way/trick?

index bit
0 -> $01
1 -> $02
2 -> $04
3 -> $08
etc.
by olddb
Mon Mar 16, 2020 10:31 am
Forum: 2019 NESdev Competition
Topic: SaveTheKuin: action-adventure
Replies: 19
Views: 4062

Re: SaveTheKuin: action-adventure

M_Tee wrote:
Mon Mar 16, 2020 12:51 am
Is there a way to change facing direction without moving?
Thanks for playing! How far did you made it?

What did you need that for? :?:
Well, it could made like the GB pokemon games where taping the pad changes direction, but pressing moves the characters.
by olddb
Sun Mar 15, 2020 4:31 pm
Forum: 2019 NESdev Competition
Topic: SaveTheKuin: action-adventure
Replies: 19
Views: 4062

Re: SaveTheKuin: action-adventure

I played this game for a bit (the version that was released with the other competition entries), and I had a few issues. First, I will like to thank you for your time and for testing our little game. The version you played was the only version available online until now. Today I'm releasing version...
by olddb
Wed Mar 04, 2020 2:08 pm
Forum: 2019 NESdev Competition
Topic: SaveTheKuin: action-adventure
Replies: 19
Views: 4062

Re: SaveTheKuin: action-adventure

Here's another hint: Since the NPCs don't turn around when you talk to them (probably due to the NROM graphical limitations), maybe you should only be able to talk to them when you stand below them. I like that. Also, have you considered switching to CNROM? It's like NROM, but allows you to switch ...
by olddb
Wed Mar 04, 2020 1:56 pm
Forum: 2019 NESdev Competition
Topic: SaveTheKuin: action-adventure
Replies: 19
Views: 4062

Re: SaveTheKuin: action-adventure

Alp wrote:
Tue Mar 03, 2020 3:06 pm
Here's a preview of some of the updated Cat Quest art, comparing them with the original sprites:
Image
Looking good!
But, I think someone took your idea a made it into a Nintendo Switch game/series!
by olddb
Sun Mar 01, 2020 9:55 am
Forum: 2019 NESdev Competition
Topic: SaveTheKuin: action-adventure
Replies: 19
Views: 4062

Re: SaveTheKuin: action-adventure

Looks interesting. How many screens did you manage to implement into NROM? And how do you store the tiles? Do you use 16 x 10 bytes for the meta tiles per screen? Thank you for checking the game out. :D I managed a few screens, but this is my first game. So I'm moving at baby steps. Some suggestion...
by olddb
Sun Mar 01, 2020 9:11 am
Forum: 2019 NESdev Competition
Topic: SaveTheKuin: action-adventure
Replies: 19
Views: 4062

Re: SaveTheKuin: action-adventure

Looks neat! :D I assume that this is more of an RPG styled thing? Thank you. :) The game is inspired by action rpgs. The game doesn't have stats progression. So I don't want to call it an rpg. Hmm... How are your maps stored? The game uses 16x16 metatiles. Also, only 16 tiles in any given map, so a...
by olddb
Sat Feb 29, 2020 7:15 am
Forum: 2019 NESdev Competition
Topic: SaveTheKuin: action-adventure
Replies: 19
Views: 4062

SaveTheKuin: action-adventure

The idea was to create an NROM action-adventure game. I quickly ran out of memory. :P So the game is short. SaveTheKuin 202002291006396.bmp SaveTheKuin 202002291007003.bmp Credits: Program: olddb Music / Art : Erich Riefkohl Other Art: LuckyCassette / Basxto 2020.03.15 Version 02 is up! SaveTheKuin_...
by olddb
Fri Feb 28, 2020 12:48 am
Forum: 2019 NESdev Competition
Topic: 2019 competition?
Replies: 17
Views: 11496

Re: 2019 competition?

What happens if this year there are few entries? Does the comp still goes?