Search found 9 matches

by tpu
Thu Dec 25, 2008 7:30 am
Forum: NESdev China
Topic: [發問]怎樣在FPGA上作出一台任天堂
Replies: 2
Views: 21658

有牛人已经做出来了,看这里:FPGA CONSOLE
http://tripoint.org/kevtris/Projects/console/index.html
by tpu
Sun Jun 11, 2006 6:48 pm
Forum: NESdev China
Topic: 目前在学习这些,有谁有源码或资料的发下,谢谢!
Replies: 8
Views: 49511

光枪你知道原理的话,编程实现应该很容易的
by tpu
Sun Jun 11, 2006 8:10 am
Forum: NESdev China
Topic: 目前在学习这些,有谁有源码或资料的发下,谢谢!
Replies: 8
Views: 49511

我直接贴上来: math.asm --------8<---------------------------- .dataseg ;math .public mtht0 .byte .public mtht1 .byte .public mtht2 .byte .public mtht3 .byte ;result .public mthr0 .byte .public mthr1 .byte .public mthr2 .byte .public mthr3 .byte .codeseg .extrn str_addr : byte ;; ;; 24bitx8bit->24bit ;; mt...
by tpu
Thu Jun 08, 2006 7:38 pm
Forum: NESdev China
Topic: 目前在学习这些,有谁有源码或资料的发下,谢谢!
Replies: 8
Views: 49511

随机数算法一般都是给一个种子,即初始值,然后返回一系列的伪随机数。只要种子一样,产生的结果就一样。把地址放在sram里面,可以保证种子每次开机都不一样。

乘除法我写过一些,这里不能上传。改天发给你研究。
by tpu
Sun Jun 04, 2006 7:49 pm
Forum: NESdev International
Topic: 第一贴/First post!
Replies: 7
Views: 21918

第一贴/First post!

:D :D :D :D :D
by tpu
Fri Jun 02, 2006 11:22 am
Forum: NESdev China
Topic: 庆祝有我们自己的天地了!
Replies: 6
Views: 33456

庆祝有我们自己的天地了!

这帮老外还是很可爱地...... :D
by tpu
Mon Nov 07, 2005 3:23 am
Forum: NESemdev
Topic: NTSC/PAL PPU
Replies: 16
Views: 10370

I think tpu meant better compatibility with NTSC games than a PAL NES.
Yes.

There have too many NTSC games on the world, a system like NES-on-a-chip is better choose in china.
by tpu
Sun Nov 06, 2005 7:39 pm
Forum: NESemdev
Topic: NTSC/PAL PPU
Replies: 16
Views: 10370

I can't get a real PAL mode NES now. But I think NES-on-a-chip have the better compatibility than real PAL NES. Almost all NTSC mode games can run on it with a little slowly.
by tpu
Sat Nov 05, 2005 7:20 pm
Forum: NESemdev
Topic: NTSC/PAL PPU
Replies: 16
Views: 10370

about pal

I have made a test on my NES(nes on chip).
My TV system is PAL-D. My NES have a 26.601712 MHz clock input.
This is the result:

1: ppu cycles per frame: 106392 (341*312)
2: ppu cycles per line: 341
3: lines per frame: 312
4: VBlank lines: 20