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I'm new on RTX51-full. When using RTX51-full, it need huge of xdata and code.

Q1: I'm using the mcu(c52) which is no xdata available. Is it still able to use RTX51?
Q2: currently i have using 62256 SRAM. Normaly i'm using XBYTE[] to transfer the data. but the RTX51 itself need xdata and code. What can i do?
Q3: How can i do? Is it i have to do some setting on keil compiler?

Thank you.]]> Fri, 27 Jun 2008 22:04:33 -0700 http://www.8051projects.net/forum-t10397.html Re: RTX51-FULL http://www.8051projects.net/forum-t10397.html
Q1: use "small memory model" for my project mean i have to use idata or data. Normaly AT89C52 only use idata and data. This C52 doesn't support xdata.

Q2: i still not understand the A2. I'm using AT89C52, it don't have xram. Is it still can use xdata keyword on my coding? If this the case the AT89C52 can't use xdata do we still can using RTX?

Q3: Do you mean the "Off-chip Code memory" and "Off-chip Xdata memory" setting on Target tab? most of the time i didn't set the Eprom and Ram. Actually how to do the setting on there if i plan to use RTX51-Full on my code? Why we need to decide the memory? Please can you guide me...

Thank you.

I found some information about the space required for RTX51-Full.
http://www.iee.put.poznan.pl/zaklady/zneie/materialy/brock/8051/rtx51.pdf
CODE = 6-8 Kbytes
DATA = 40-46 Bytes
Stack (IDATA) = 20-200 Bytes
XDATA = 650 Bytes min
Is it AT89C52 possible to use RTX51-Full?
]]> Help<tangbc05@nospam.com> Sat, 28 Jun 2008 19:55:30 -0700 http://www.8051projects.net/forum-t10397.html Re: RTX51-FULL http://www.8051projects.net/forum-t10397.html
A2: try not to use absolute addressing and accessing of memory when using RTX. instead use xdata keyword to store your variables in xram
e.g.
CODE:
unsigned char xdata x;
 


A3: Just go through the target settings once.. you will get your answer.]]> Ajay<contact@nospam.com> Sat, 28 Jun 2008 08:11:51 -0700 http://www.8051projects.net/forum-t10397.html Re: RTX51-FULL http://www.8051projects.net/forum-t10397.html
Maximum Number of Defined Tasks: 16
Maximum Number of Active Tasks: 16
Required CODE Space: 900 Bytes Max
Required DATA Space: 7 Bytes
Required STACK Space: 3 Bytes/Task
Required XDATA Space: 0 Bytes
Timer: 0
System Clock Divisor: 1,000-65,535
Interrupt Latency: 20 Cycles or Less
Context Switch Time: 100-700 Cycles
]]> Ajay<contact@nospam.com> Mon, 30 Jun 2008 04:40:01 -0700 http://www.8051projects.net/forum-t10397.html Re: RTX51-FULL http://www.8051projects.net/forum-t10397.html
Thank for ur advice...i wil try to use tiny..
]]> Help<tangbc05@nospam.com> Thu, 03 Jul 2008 20:30:34 -0700 http://www.8051projects.net/forum-t10397.html