Search found 196 matches
- Tue Jan 12, 2021 8:06 pm
- Forum: General Stuff
- Topic: problemkaputt.de is gone
- Replies: 12
- Views: 831
Re: problemkaputt.de is gone
I use Digital Ocean for my site. I don't remember what it costs (our son handles it), but it's a lot cheaper than just the electric bill of hosting it on a PC in our garage was, and the Digital Ocean connection speed is much, much faster than our connection at home is, so if multiple visitors are do...
- Sun Dec 13, 2020 6:22 pm
- Forum: General Stuff
- Topic: Quintessence of OOP
- Replies: 11
- Views: 2506
Re: Quintessence of OOP
It seems like I really should learn OOP. I read and read about it, watch videos, and I understand a little and say, "Oh, I've done that in Forth. I didn't realize it was OOP." But then I don't understand the OOP explanations well enough to regurgitate them. Apparently OOP's greatest value is in GUIs...
- Mon Oct 26, 2020 1:48 pm
- Forum: General Stuff
- Topic: [SOLVED] Nin. Switch audio buzzes when docked - can i make a ground loop isolator?
- Replies: 12
- Views: 4655
Re: [SOLVED] Nin. Switch audio buzzes when docked - can i make a ground loop isolator?
It sounds like you've lived a charmed life between working at TEAC, installing aircraft equipment, and 6502 programming. Your website is a wonderful resource too, i have referenced it many times, thank you =) You're welcome. There are additional major features I want to post, but it all takes so muc...
- Mon Oct 19, 2020 6:28 pm
- Forum: Newbie Help Center
- Topic: Organizing and compiling multiple files
- Replies: 4
- Views: 3314
Re: Organizing and compiling multiple files
I would make the include files be modules that I would use in other projects. Otherwise there's not much sense in breaking it up just to break it up.
- Mon Oct 19, 2020 1:45 am
- Forum: Newbie Help Center
- Topic: Useful pre-indexed indirect addressing instructions
- Replies: 4
- Views: 2187
Re: Useful pre-indexed indirect addressing instructions
The (ZP,X) addressing mode is great for when you have a ZP data stack, using X as the stack pointer, and various cells on this stack may be addresses. This addressing mode is used all the time in Forth and I suspect other HLLs too. We had a discussion on this on the 6502.org forum, at http://forum.6...
- Tue Oct 13, 2020 2:57 pm
- Forum: General Stuff
- Topic: [SOLVED] Nin. Switch audio buzzes when docked - can i make a ground loop isolator?
- Replies: 12
- Views: 4655
Re: Nin. Switch audio buzzes when docked - can i make a ground loop isolator?
Noises get in when a signal is referenced against something that not really ground. People thing that connecting all the grounds everywhere to each other should fix it, and that ground is ground is ground; but that's not true. The term "ground loop" is often misapplied, and the phenomenon is widely ...
- Sat Oct 10, 2020 1:45 am
- Forum: NESdev
- Topic: 6502 vdelay - cycle delay routine with variable length at runtime
- Replies: 37
- Views: 13502
Re: 6502 vdelay - cycle delay routine with variable length at runtime
It's only seven bytes; so you could even straightline it (instead of called as a subroutine) and add a NOP or two, and if necessary, a trailing BCC to the next instruction (meaning a 3-cycle NOP, assuming it doesn't cross a page boundary), in quite a few places to get the needed resolution without t...
- Fri Oct 09, 2020 10:37 pm
- Forum: NESdev
- Topic: 6502 vdelay - cycle delay routine with variable length at runtime
- Replies: 37
- Views: 13502
Re: 6502 vdelay - cycle delay routine with variable length at runtime
Check out also this slick one from Bruce Clark. The delay is 9*(256*A+Y)+8 cycles (plus 12 more for JSR & RTS if you make it a subroutine). This assumes that the BCS does not cross a page boundary. loop: CPY #1 DEY SBC #0 BCS loop He writes: "A and Y are the high and low bytes (respectively) of a 16...
- Mon Sep 28, 2020 11:04 pm
- Forum: Newbie Help Center
- Topic: Assembly optimization
- Replies: 11
- Views: 3954
Re: Assembly optimization
Good points so far. I have a lot at http://wilsonminesco.com/6502primer/PgmTips.html .
- Sun Sep 27, 2020 1:49 am
- Forum: General Stuff
- Topic: What chips should be in that PCB?
- Replies: 5
- Views: 4054
Re: What chips should be in that PCB?
My 1992 Hyundai data book has up to 128Kx8 (1Mb) SRAMs, in 32-pin DIPs and SOPs. I got a 1 megabyte SRAM STD-bus board at work in 1990 or so which had eight 128KB SRAMs on it. ("STD" stands for "simple to design," not "standard.")
- Mon Sep 14, 2020 5:05 pm
- Forum: Newbie Help Center
- Topic: Hello, I'm back, still need assistences
- Replies: 99
- Views: 23036
Re: Hello, I'm back, still need assistences
Any progress?
- Wed Sep 02, 2020 12:15 am
- Forum: General Stuff
- Topic: Math vs Language in programming
- Replies: 19
- Views: 11207
Re: Math vs Language in programming
Jacobson, I had not seen the post you linked to. I'm not a moderator or administrator on this forum; but I am one on several others, and I've seen the pattern over and over. Although there's nothing specific wrong with the one post, if it looks suspicious like this and I use the tools available to o...
- Tue Sep 01, 2020 1:36 am
- Forum: General Stuff
- Topic: Math vs Language in programming
- Replies: 19
- Views: 11207
- Fri Jul 31, 2020 1:20 am
- Forum: General Stuff
- Topic: Making "Good" Assembly Code
- Replies: 73
- Views: 25835
Re: Making "Good" Assembly Code
Move from A to B is technically correct but not something you would say "Move from A to B" is very normal in English. "Maths" however is not a word we use in the U.S.. (I think England uses it though.) In the U.S., it's always "math," like "dirt" or "air," never plural. 6502 is based on 6809 which ...
- Mon Jul 27, 2020 9:16 pm
- Forum: phpBB Issues
- Topic: Anti-spam proposal
- Replies: 30
- Views: 10710
Re: Anti-spam proposal
User-level bans for spammers are meaningless, only IP blocks and deleting users means anything. I should have been more complete in my post right before that. phpBB forum mods can ban a user by name and IP address, and, if they can get an email address from a site like stopforumspam.com, ban the em...