Search found 531 matches

by groepaz
Wed Dec 04, 2013 2:41 pm
Forum: Hardware and Tech
Topic: Why is the 40/80 col. display manager slowing the VIC?
Replies: 34
Views: 1423

Re: Why is the 40/80 col. display manager slowing the VIC?

Thank you for belittleing everyone... so far i have no reason to belittle anyone except those who are unable to get obvious jokes. What exactly do this "coming back to the topic" have to do with the Protecto 80 / Data 20 80 columns display adapter? That was the real topic to begin with, m...
by groepaz
Wed Dec 04, 2013 9:36 am
Forum: Programming
Topic: Senior Moment With SCNKEY
Replies: 13
Views: 1604

Re: Senior Moment With SCNKEY

hehe, it probably saved a byte or two somewhere.... the irq is disabled during some IEC operations, i guess this cli makes sure they are enabled afterwards :)
by groepaz
Wed Dec 04, 2013 9:33 am
Forum: Hardware and Tech
Topic: Why is the 40/80 col. display manager slowing the VIC?
Replies: 34
Views: 1423

Re: Why is the 40/80 col. display manager slowing the VIC?

I feel Groepaz's posts were simply off topic and demeaning. the one who apparently felt the need to post offtopic babble and a personal attack was you, not me. i just expressed my opinion regarding the possible useful application of a certain programming language - no more no less. note that this o...
by groepaz
Tue Dec 03, 2013 1:57 pm
Forum: Programming
Topic: Challenge: Create or Delete Lines from inside a program
Replies: 27
Views: 3661

Re: Challenge: Create or Delete Lines from inside a program

Especially during development, you wouldn't want to reload the program each time it was run before to return it to a 'virgin' state. thats one reason that makes crossdevelopment so attractive - you can easily and painlessly do things that require to re-run from a clean state every time. its quite a...
by groepaz
Tue Dec 03, 2013 1:13 pm
Forum: Programming
Topic: A commodore 64 conversion
Replies: 3
Views: 834

Re: A commodore 64 conversion

$01 is the cpu port and indeed it is responsible for the memory layout, look here

as for the timer start/stop - this is probably to disable/enable the system interrupt (which is driven by CIA1/Timer1)
by groepaz
Tue Dec 03, 2013 1:09 pm
Forum: Programming
Topic: Senior Moment With SCNKEY
Replies: 13
Views: 1604

Re: Senior Moment With SCNKEY

This may very well have to do with the function of the CTRL-key during PRINT.

... and the function of run/stop during disk operations, yes.
by groepaz
Tue Dec 03, 2013 1:07 pm
Forum: Hardware and Tech
Topic: Why is the 40/80 col. display manager slowing the VIC?
Replies: 34
Views: 1423

Re: Why is the 40/80 col. display manager slowing the VIC?

You're so better than everyone else!

and you are a canadian with a stigma? deal with it.
by groepaz
Mon Dec 02, 2013 11:48 am
Forum: Hardware and Tech
Topic: Why is the 40/80 col. display manager slowing the VIC?
Replies: 34
Views: 1423

Re: Why is the 40/80 col. display manager slowing the VIC?

I guess you never have tried a basic game. enough to consider basic not suitable for games and avoid them at any cost =) If you think it's a bad test, then just go and make your own. i did one that measures instruction timing :) as for basic... oh well. its slow and slower. no need to test that for...
by groepaz
Sun Dec 01, 2013 3:52 pm
Forum: Hardware and Tech
Topic: Why is the 40/80 col. display manager slowing the VIC?
Replies: 34
Views: 1423

Re: Why is the 40/80 col. display manager slowing the VIC?

But PRINT IS a basic command too. And one used quite frequently I would say. yes, but typically programs don't scroll the screen all the time (using the print command) - so the speed of that operation isn't terribly important - it should have much less impact on the score of a "generic" b...
by groepaz
Sat Nov 30, 2013 7:59 am
Forum: Hardware and Tech
Topic: Why is the 40/80 col. display manager slowing the VIC?
Replies: 34
Views: 1423

Re: Why is the 40/80 col. display manager slowing the VIC?

This test is of the basic and computer as a whole, and screen output speed is an important factor for the feel of a computer maybe - but then again the graph says "basic commands per second", which is questionable at least. removing i/o bound operations from these measurements would give ...
by groepaz
Sat Nov 30, 2013 6:30 am
Forum: Hardware and Tech
Topic: Why is the 40/80 col. display manager slowing the VIC?
Replies: 34
Views: 1423

Re: Why is the 40/80 col. display manager slowing the VIC?

interesting.... in any case it shows that this test program isnt really suited for measuring the speed of the basic interpreter if the screen i/o does have such a huge impact :)
by groepaz
Fri Nov 29, 2013 10:32 am
Forum: Hardware and Tech
Topic: Why is the 40/80 col. display manager slowing the VIC?
Replies: 34
Views: 1423

Re: Why is the 40/80 col. display manager slowing the VIC?

if its hardware, then the cause is likely that the chip does not have its videomemory memory mapped, but its accessed via an i/o port - which is also kinda slow.
by groepaz
Fri Nov 29, 2013 7:44 am
Forum: Hardware and Tech
Topic: Why is the 40/80 col. display manager slowing the VIC?
Replies: 34
Views: 1423

Re: Why is the 40/80 col. display manager slowing the VIC?

i don't know that "40 columns manager" - but i'd assume that it creates a 40 columns display in software, which is quite a bit slower than normal text screen (and the test also takes PRINT speed into account, even including scrolling the screen - which will have a huge impact on speed)
by groepaz
Tue Nov 26, 2013 9:29 am
Forum: Other Systems
Topic: Why were BASIC interpreters incompatible on old machines?
Replies: 7
Views: 859

Re: Why were BASIC interpreters incompatible on old machines

imho another important aspect is that BASIC was mostly looked at as a "toy language". it was something beginners use to toy around with computer programming - no more no less. it was never ment as a platform for "serious" programs, where things like "portability" would ...
by groepaz
Tue Nov 26, 2013 9:23 am
Forum: General Topics
Topic: Forum moved to new host
Replies: 78
Views: 12403

Re: Forum moved to new host

something with the "lost password" feature is wonky.... that mail never arrived here (yeh i managed to guess it anyway later... :))

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