are there any evaluation version of RTX51 tiny or full
I don't think there is a RTX51 eval but you should contact Keil sales for a final answer. They may have some provisions for a limited time eval. Also, google MicroC/OS-II by Jean Labrosse for a general purpose RTOS that can be configured for C51 devices. I'm sure there are others available such as CTX. Another source of info might be http://www.8052.com. Bradford
a RTOS in a piece of code that TOTALS 2k
Erik
Before evaluating a particular RTOS, be sure to carefully evaluate whether you really need any RTOS at all...
If your project really requires an RTOS, then you'll probably be needing hte full PK51 anyhow - which includes RTX51!
MicroC/OS-II is a big chunk for an 8052. The 8052 has limited instruction to handle the context switch. I have seen it done so it is quite possible. Reasonable? Maybe, Maybe Not.
I have seen it done so it is quite possible
with an eval??? will it even fit?
RTX51 Tiny will fit in about 600 bytes. It makes a fine task scheduler. A real RTOS, maybe not but I have used in in several projects. Bradford