You are very right Yogesh! Sadly even if we buy a good programmer like the TL866-II, or the Nand programmer RT809H, thinking we can program most of the known chips with them, we'll only find out that we still can't. certainly not in the parallel programming way. And although ICSP is available most devices still can't be programmed with mentioned programmers because they are not supported like the PICF1455 and the STC8A8K64S4A12 processor. And we have to use other manufacturer dedicated software over ICSP/serial TxD RxD connection. I already own at least 4 different programmers and still also have to use special Jtag programmer interfaces and different manufacturer related programs for my FPGA chips made by Xilinx or from Atmel.

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Here is an article that also tells how to program the STC MCU here:

Which says: In addition, STC Series MCU
ISP monitor program is running on the power up, if you want to download the program code, you need
to restart the MCU, which is the first to disconnect the power supply, and then on the power.

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There are always moments that I am stuck when for some reason something doesn't work like in the situation I mentioned in my reply to Parasuraman above this post where the STC processor never was recognized although my USB to serial adapter was working fine and the STC-ICP program worked fine too. And I already had connected everything including Vcc (+5V) to the processor but programming the fast STC8A8K64S4A12 processor kept failing why I gave up for a couple of days. But later I picked up where I left after I somewhere read that Vcc must be reattached to activate the programming process. Sadly no one told me. Even the STC MCU seller never gave a hint to try that why it looked as if both my 2 STC controllers were dead. I believe it was on this website that I read about the solution: https://jaycarlson.net/pf/stcmicro-stc8/ So I hope Konstantinos that this saves you this trouble in case you also use the STC-ISP software to program the STC microcontroller.

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I'm glad that with some help from Google and all PE magazine articles I already had printed out for reading about the MicroBridge and the MicroMite paid off Waleed. And to show you what great things already can be made with this within a second powering up superfast microcomputer have a look at this site: https://micromite.org/shop/.
Have a good blessed week!

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