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Programming speed on 48GX



#12

Just wondering, but do program run faster in Port :0: or faster in the home directory?


#13

No speed difference, since both port0 and HOME reside in main RAM.

Differences will be there if you store your program in a port>0, or worse, a port>1 . Ports 2 to n are always bankswitched, so code run from there will always be slower.

Port 1 is online (not switched) in most cases. IIRC, there were occasions when even port 1 is hidden, but i'm not sure at the moment.

However, most of my software libraries reside in port 1, and the programs run very fast from there.

Raymond


#14

code run from there will always be slower

The code will run at the same speed but program loading will be slower because it has to bo copied from port >=2 into main memory before execution (unless you execute it directly from the port as in the case of my emulators).

Code from port 1 usually don't have to be copied to main memory and can be executed directly.

I have measured the machine code execution time in main memory and RAM cards in port 1, 2, ... and I haven't noticed any difference in speed.

Best regards.


#15

Thanks. When I call the programs I need to also press EVAL.
E.g. :0:quadratic . Is there any alternative way of doing it? Thanks,
Naim


#16

I use to store my programs in libraries and call them from menus (choose boxes or softkeys): does this help to you?


#17

Hi Raul,
If you were running a program and it calls up a subroutine [subprogram] stored in port:0: , how would you call it?
Thanks,
Naim


#18

with EVAL, as you said in your previous post


#19

Why do you store it in port 0 anyway?

It uses the same RAM as main RAM.

{VPN} now using the new 49g+


#20

I answered a question... but sure I don't store my libraries in port 0. (...but Erable "fixed addreses")
For saving free memory in the main RAM, I store my programs grouped in libraries in ports>=2. So for running a program, just key in its name. Not EVAL is needed. Or use menus...


#21

Sorry Raul!

I should have answered the previous post...

Iqbal gave actually a good answer to my question

with best regards {VPN}

#22

I store my programs in port :0:.
I started doing so because someone I gave my programs gave another person [that I didn't approve of] and I started to think of a way to prevent stealing of my programs. It works, because they have to call it out of port :0: and then send it across and then send it back to port :0: because some programs call back programs from port :0: [bit confusing :)] . So if it's not there they'll have a problem. I have in fact written an installation program to transfer my programs to port :0: and it's purged after installation. It looks good when it's being installed and secondly, it makes it very tedious to transfer.


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