nesdev.org

i wanted to use the mmc1 cause i found that the i could find SAROM cheaper and more common. something with WRAM. but if could figure out how to bypass the mapper situation with discrete logic im all for it. but im still looking in to it. i wonder if you can use SRAM instead of WRAM as a battery back...

ok its worked but on wierd conditions. this how my lay out was: inesprg 1 ;only worked when set to 1 .bank 0 .org $8000 -----code------ .bank 1 ;only worked when set to 1 .org $a000 -----code------ .bank 1 ; set the following to 2 and 3 respectively with no luck .org $FFFA .dw 0 ;(NMI_Routine) .dw S...

O.k. i keep getting a >$1FFF error in NESASM.exe. after looking at Hex Editor it seem i have passed the 8kb Mark on my demo. So now i have to start using mappers. Im gonna start using the MMC1, but had a few questions on it. 1. When using the mapper do it write a new bank of code (.org $E000) above ...

i used the delay to move sprite that changed everytime time i made a button press and increased or decreased in speed. the presses where made in the NMI and would update apprioately with event. while movements where in the MAIN. the falisy with this is that there can be nothing else in the Main. but...

If you decrement these variables once everyframe, ideally in your NMI routine, when they reach zero you know the delay is over. but then again you will have to nest to other counters. beacsue the maximum possible value would FF to 00 This allows you to delay diferent parts of your program independe...

i tried a loop in Main that didnt work in NMI. that could set appropriate delays with key presses or store values at the end of a loop once your current event ends. then using lookup tables to to enter a desired amount of timing. CHANGE_TIME LDX INC_B_BUTTON ; or event LDA TIME,x STA OUTLOOP1 LDA TI...

im kinda in the same boat right now. deciding where which part of my code is better to be run in NMI or a Main Loop. So far i found that a least delays work best in the Main loop and not in the NMI. basically almost everything in my code is being run in NMI's but there some slight problems in NMI th...

ok i got scared there for a sec. i forgot that one portion is for bg and the other for sprites. what i didnt know is that they can be in either left or right pattern tables and that to choose which ones you want you must let $2000 know. if this is the case im guessing some games used different mappe...

What do you mean "switching the VRAM"? $1000 is always CHR. From what I understand the pattern table is sprites arranged in CHR files. And im kind of confused about at CHR starting at $1000. what starts at $0000 when the bit 3 of $2000 is clear on initialization. I am confused about what ...

hello anyone, Ive been having problems switching the VRAM to the $1000 page in my CHR. i made a demo that writes a different nametable on the hit of a button. All works well until i tried to switch the VRAM. All that shows is my newly written nametable with the spirtes in the $0000 page of my CHR. I...

thanks so much i can always count on yall.

Does anyone have the link to the rarity list document with the mappers instead of the grades on it?

Ive been wondering whats the main difference in using a MAIN loop over a NMI. On my demos some subroutines work better in NMI than in Main loop, or sometimes not at all. I've been wondering cause ive been realizing that sometimes my code begins to get buggy after a while, when run in the NMI. For e...

i tried the .incbin loopy mentioned
and
the merging them together without .incbin.

asm6 tst.asm tst.bin
copy /B tst.bin +tst.chr tst.nes
pause

but yeah i figured it was something with .chr

oh yeah it works on NESASM.
http://www.freewebs.com/ninetendo/NT1.NES

same code. i get this on asm6
http://www.freewebs.com/ninetendo/tst.NES