Search found 473 matches

by Petari
Sat Dec 01, 2018 1:13 pm
Forum: SOFTWARE PROGRAMMING & DISCUSSION
Topic: Exception vector oddity
Replies: 11
Views: 237

Re: Exception vector oddity

ijor wrote:
Sat Dec 01, 2018 12:56 pm
Sorry, can't reply to your PM. For some reason I am not allowed and seems my posts still need to be approved. I assumed that after 10 posts that would not be required anymore ???
Please reply me in e-mail - you know it.
by Petari
Sat Dec 01, 2018 9:58 am
Forum: SOFTWARE PROGRAMMING & DISCUSSION
Topic: Exception vector oddity
Replies: 11
Views: 237

Re: Exception vector oddity

You are right in latest post. But what matters is that reliable return is possible. Generic code ? That's relative :D
There are many cases where workaround gives best results.
by Petari
Sat Dec 01, 2018 9:19 am
Forum: SOFTWARE PROGRAMMING & DISCUSSION
Topic: Exception vector oddity
Replies: 11
Views: 237

Re: Exception vector oddity

... You can't reliably return from a bus or address error. The value of the PC pushed on the exception frame is not exact. This is also described on the 68000 manual. Sorry, but that's not correct. Me, as TOS expert, and who disassembled complete TOS 1.04 , 1.62 and 2.06 know that reliable return h...
by Petari
Sat Dec 01, 2018 6:45 am
Forum: GAME ZONE
Topic: Whitewater Madness
Replies: 1
Views: 131

Whitewater Madness

https://www.youtube.com/watch?time_continue=4&v=dTUfODLuBh4 Download: http://atari.8bitchip.info/SCRSH/whitewm.html Game is pretty well done, but would not say that will challenge player for longer time. Yes, this is very first STE game, done by Atari self. Actually, the following message at Atarima...
by Petari
Sat Dec 01, 2018 6:34 am
Forum: CHAT FORUM
Topic: The wife..
Replies: 2
Views: 86

Re: The wife..

Well, another proof that females are much more rational beings than males :lol:
by Petari
Tue Nov 27, 2018 6:52 am
Forum: CHAT FORUM
Topic: Forum "slogan" update ?
Replies: 46
Views: 833

Re: Forum "slogan" update ?

I think that previous post was not really necessary in this thread, what is in big part about Atari-Amiga people cowork. And that's nice thing. I always wished to share some experiences with Amiga people, and actually I did. I gave help and necessary advice to man who made FPGA Amiga clone for IDE p...
by Petari
Mon Nov 26, 2018 8:09 pm
Forum: STF REMAKE PROJECT
Topic: Cartridge port adding RW...
Replies: 9
Views: 350

Re: Cartridge port adding RW...

... Yes and no.. It depends on the spec of the diode. Some have drops as little as 0.2v. It also depends on current. A diode may well have 0.7v drop, but at what current ? May well be 1amp. If we assuming 1k resistor on 5v current that's just 5ma. Given the same diode its voltage drop may be just 0...
by Petari
Mon Nov 26, 2018 4:57 pm
Forum: CHAT FORUM
Topic: Forum "slogan" update ?
Replies: 46
Views: 833

Re: Forum "slogan" update ?

I'm deeply offended, since I'm Sinclair Spectrum and Atari ST retro user over 30 years - Spectrum 35 ... :lol:
Just to moan a little :mrgreen:
by Petari
Sat Nov 24, 2018 7:36 am
Forum: SOFTWARE PROGRAMMING & DISCUSSION
Topic: Exception vector oddity
Replies: 11
Views: 237

Re: Exception vector oddity

MC68000 has generally 2 types of exception: Group 1 and 2 : On stack SR and Return address - 6 bytes . It is used by interrupts, Trap instruction, .... Bus or address error exception frame: Access Address, Instruction Register, Then SR and Return Address (called program counter too) . That's 12 byte...
by Petari
Fri Nov 23, 2018 7:02 pm
Forum: CHAT FORUM
Topic: I "so" low Black Friday !
Replies: 4
Views: 116

I "so" low Black Friday !

Record number of spam today in mailbox. More than in 2 weeks. Nothing seen what is worth to buy - here talk about what saw in city. Changed mobiltel provider, because they acted like idiots - beside all heavy advertising and 1 week long Black Friday refused to correct their obvious error - turning o...