Does anyone know the maximum number of cycles of non-interruptible instructions that can occur sequentially? Joe's documentation (on the new Wiki) seems to...
OK. Admittedly this is not a programming question. And there are probably stupid questions within this. But here it goes ... What are safe and acceptable...
... I don't know much about the INTV hardware, but I know a thing or two about electricity... :) You need to match the voltage pretty closely (not off by more...
Hi Mike I have seen some of those recommendations of power supplies for the Intellivision systems, Scarrrry just because they were able to plug it in and it...
OK. Admittedly this is not a programming question. And there are probably stupid questions within this. But here it goes ... What are safe and acceptable...
Carl, I believe that more than 40 cycles of non-interruptible instructions in a row is not safe indeed. I don't know all the details very well -- so please...
... I don't have an exact number. I also try to limit myself to around 40. I think there are a number of factors that whittle away at that 57, but I can't...
Hey everyone. I'm poking at the timing diagrams for the CPU bus. I'm looking at dri_2.txt from the SDK in the Bus Control Signals section. Looking at the...
Joe Fisher
joefish75@...
Feb 2, 2005 5:06 pm
4368
... Right. And it may take the CPU a cycle or two to actually recognize the BUSRQ. More on this in a sec. ... I think there may be an additional 1 or 2 cycle...
Joe, The "Osborne Book" has some diagrams that clear this up. Basically, the clocks are at 3.579545MHz. Four clock phase are one "microcycle," if I recall...
... Ah, that would make a lot of sense. DRI says the CPU runs at 894.886 KHz, which happens to be 4 cycles at 3.579545 MHz. It just never says what the ...
Joe Fisher
joefish75@...
Feb 2, 2005 6:39 pm
4371
David, I sent you a couple of emails to your german account, but they bounced. Please contact me at willy_in_japan@......
... Hi Joe! When we built the original dumper, I think we took the cart connector from an Intellivision II. There are enough junk Intellivisions around that...
... Joe, I have been meaning to update "De Re Intellivison" and put it on the web. Frank supplied me with a utility that turned the high ascii drawings in it,...
Joe, So, I finally decided to try my hand at Inty programming. My wife just came in and said, "What're you doing?" "I'm writing my first Intellivision...
Joe Fisher
joefish75@...
Feb 8, 2005 2:01 am
4375
... *grin* ... Are you in a 16-bit ROM? (ROMW 16 vs. ROMW 10) I betcha if the STRINGTABLE was before your ORG $5000 statement, it was assembling at address $0...
Well, enjoy your plans ;) Maybe someone else on the list can lend some insight. It amazing how I could write an entire emulator and be completely useless...
Joe Fisher
joefish75@...
Feb 8, 2005 4:03 am
4377
... It was fun, but perhaps more drama than I care to relate on an INTVPROG type list. :-) ... They *are* different skill sets. Trust me. ... Move to a...
... I might add: Those restrictions weren't arbitrary in 1985, but they are in 2005. :-) Times change, and so should our coding styles. :-) :-) --Joe ===== ...
... Sure. I was just using Hello World as a template. Ah yes, that works! Grand :) I just came across an interesting thing. In Hello.asm, the includes for ...
Joe Fisher
joefish75@...
Feb 8, 2005 2:42 pm
4380
... Which reminds me: I need to change that to a 16-bit ROM. I don't know what I was thinking when I made it 10-bit, but I've run up against that "ROMW 10"...
... My guess is that ENDP is interpreted as a label, when unindented. Therefore, your procedure is not properly closed. On a related note, I'm personally not...
... I tend to agree. The BEGIN/RETURN stuff was an idea that came from Your Friend the EXEC, actually. I have a lot of procedures which just do "JR R5" at the...
IntelligentVision is proud to present our second released game; Minehunter. Please visit our site at: http://www.netcyber.com/intelligentvision/minehunter.htm ...
OK, this one's driving me crazy. I'm making really good progress. I wrote a subroutine that reads a table of strings and prints them out in order to the...
Joe Fisher
joefish75@...
Feb 8, 2005 9:29 pm
4386
... the ... Oops, I see that I'm probably overwriting the stack here. I thought maybe I was inadvertantly setting an ISR vector by writing to $100. Is that...
Joe Fisher
joefish75@...
Feb 8, 2005 9:32 pm
4387
Joe, $2F0 is the EXEC's pointer to the cartridge header. $100 (and $101) is the EXEC's pointer to the current ISR vector. I think the Inty Wiki lists some...
... GROM lower case letters can be displayed in ColorStack mode only. You're probably in FG/BG mode. In FG/BG, bits #9 and #10 of backtab words are used for...
Thanks, Joe. Is there some information on using the EXEC vs. not using it? Like what does the EXEC buy me and such. I'm fairly sure I won't need it for what...
Having problems with message search?
Fill out this form to ensure your group is one of the first to be migrated to the new message search system.
