Search found 487 matches

by Jarhmander
Fri Sep 26, 2008 9:02 pm
Forum: NESdev
Topic: NES development manual?
Replies: 65
Views: 22817

Roni wrote:
Celius wrote:for all I knew the 6502 Jump instruction is what made Mario jump on the SMB games.
that was cute.
I second that :)
by Jarhmander
Thu Sep 18, 2008 12:44 pm
Forum: NES Music
Topic: Good MML Sites
Replies: 14
Views: 9264

Sorry for that bump, but where can we find PPMCK ex 3? It seems that everything related to Bouchiki is destroyed! Someone has downloaded it and kept it?
by Jarhmander
Wed Aug 27, 2008 7:56 pm
Forum: Newbie Help Center
Topic: A "NES" assembler to start with
Replies: 5
Views: 3023

Thanks!

I'll come out with sound blasting shit outta the NES.

reward.
by Jarhmander
Sat Aug 23, 2008 9:19 pm
Forum: Newbie Help Center
Topic: A "NES" assembler to start with
Replies: 5
Views: 3023

A "NES" assembler to start with

Remember - the only dumb question is the question that remains unasked. Well, that help me feel better... :) As a beginner to NES assembling, which assembler would you recommend me to start with? I want something that poos .NES files so I can use it immediately in a NES emulator. If you give me a *...
by Jarhmander
Thu Aug 21, 2008 9:14 pm
Forum: Newbie Help Center
Topic: Number of color available on screen (NES)
Replies: 2
Views: 1779

Ahah thx,

but why I said 2 palette is because I was refering to waht is said on docs (2 palette of *16* colors) , but yeah since a sprite or background "cell" is a 2 bit bitmap, we can see the other way, say, 4 palettes of *4* colors for sprite and 4 palletes of *4* colors for background.

Many thanx
by Jarhmander
Thu Aug 21, 2008 6:54 pm
Forum: Newbie Help Center
Topic: Number of color available on screen (NES)
Replies: 2
Views: 1779

Number of color available on screen (NES)

I'm almost sure, but I still need to be absolutely sure: if we say that the NES can only display 25 colors on a screen, is it explained by this: 12*2 + 1 =25 which is, the number of different colors on backgroud palette and sprite palette + the background color? ( because palettes hold 16 colors but...
by Jarhmander
Sat Jun 21, 2008 10:11 pm
Forum: NESdev
Topic: My first assembly program :D
Replies: 1
Views: 2120

My first assembly program :D

I'm proud to show here my first assembly program :D I tried to find informations about NES PPU in the forums (because well I don't fully understand it) and then I found this simulator in a thread I don't remember. The online simulator can be found here : http://www.6502asm.com Press '0' to '9' to pr...
by Jarhmander
Sat Jun 14, 2008 5:56 pm
Forum: Newbie Help Center
Topic: Question about NES vectors and PPU
Replies: 24
Views: 7493

Hey, I thought about something similar to tokumaru, to ensure that music will not lag. So I'm not dummy... Do you think that it is even possible to design such a engine that calculate time to processing the current frame and if it is too big to be performed and ready in that frame, just calculate th...
by Jarhmander
Sat Jun 14, 2008 3:23 pm
Forum: Newbie Help Center
Topic: Question about NES vectors and PPU
Replies: 24
Views: 7493

So, code pointed by the reset vector,except for initialisation of the PPU and memory and everything you want to initialize (mappers, perhaps), does nothing? Not really.... Code pointed to by the reset vector is your game . It's the entry point. The reset vector simply tells the NES where the start ...
by Jarhmander
Fri Jun 13, 2008 11:30 pm
Forum: Newbie Help Center
Topic: Question about NES vectors and PPU
Replies: 24
Views: 7493

So many thanks for these fast answers. The confusion with the PPU is because 2A03 and 2C02 were chips supplied by Ricoh and their name and pin package were so identical I thought they were actually 2 modified 6502s... But it was always clear to me that PPU doesn't read instructions back from the car...
by Jarhmander
Tue Jun 10, 2008 7:17 pm
Forum: Newbie Help Center
Topic: Question about NES vectors and PPU
Replies: 24
Views: 7493

Question about NES vectors and PPU

Alright, first time posting a question. Note that I'm not new to programming nor assembly, but I'm new to programming a game and new to the assembler, meaning that I don't know how the assemblers work. Well, I knows the vectors present in the NES, and know what they are suposed to do, in the micropr...
by Jarhmander
Wed Jun 04, 2008 5:59 pm
Forum: NES Hardware and Flash Equipment
Topic: New 72 pin connector for top loader?
Replies: 2
Views: 1739

Just disassemble your NES and then clean/bend your connections gently so your connector "bites" your cartridge. My 2 NES work flawlessly with this very simple method.
by Jarhmander
Mon May 12, 2008 10:36 am
Forum: Newbie Help Center
Topic: Recommend a rom to dis-assemble & study (for sound).
Replies: 15
Views: 6125

I find that it's best to have a "command" byte then data following that. The command byte would hold 8 flags indicating what you want done. For example: 7 - Go to $xxxx 6 - Change Tempo 5 - Change Note 4 - Change Volume 3 - Change Length 2 - Repeat Note 1 - Change Instrument 0 - Silence Channel Squ...
by Jarhmander
Fri Apr 18, 2008 10:50 pm
Forum: NES Music
Topic: Changing Notes
Replies: 16
Views: 11070

I don't know exactly what you mean by "bubbly", but I know that writes to $4003/$4007 cause the sequencer (that unit outputting the duty cycle in square channels) to reset, which sound like a phase reset. To avoid this, one should write to these registers only when needed, in other words when change...
by Jarhmander
Wed Apr 16, 2008 8:48 pm
Forum: General Stuff
Topic: Member list purge
Replies: 8
Views: 3495

Eh, this topic is kinda funny to me, as I might be considered as a "to-purge member" since I did 1 post then... vanishing in the dark. But I actually lurk around and spy new posts since few months ( I think 2 months) and quietly read any programming related topic. I'm studying electronic at college ...