Hi!

First of all, none of your links are working (all of 'em return a 404 error)... So without pictures it's going to be tough to identify what this machine is.

About the CRT port, it has chances to be either CGA or EGA, which both require a special monitor (an EGA monitor can usually fall back to CGA but unfortunately they are very scarce and expensive) but on a laptop like that it can be VGA or something else.

As for the coprocessor (80387) yes they can be found, BUT there is a catch. Your coprocessor must be a SX variant (as you can't put a 387DX with a 386SX, in the same vein, you can't put a 387SX with a 386DX).

Ok thx , i dont know how to put picture , link work for me i check it .

thx
i understand your explain about coprocessor i will buy a i387 SX , main cpu it is a amd i386 SX at 25 MHZ.
about CRT port , i check in bios and put VGA , i can select monocrome ecga and other option, i plug vga cable from port to monitor but no signal on monitor , it is posible to be a some combinations of key Fn +something i check it but no one icon in keys

I'm not entirely sure about the CRT port, on some laptops you had to flick a DIP switch somewhere, on others you had to press a key combination (although I doubt it'd be the case on a early laptop like yours, all of the laptops I have are from the late 90's to early 2000's)

i am locking for a switch but dont find , not inside ?¿ or yes i try again with and fn this night.
i order a CF adapter and a compact flash what capacity for no problem ? 1 giga , 512 ?

thx
Edit 1 post i think pictures work now

For a machine of this age, 512mb is a safe bet, BIOSes of this age often have problem with high capacity drives...

Looking at the FCC ID, this led me there: https://fccid.io/HEINBK

Unfortunately this still can't help us identify this machine.

Again again

i can not put image about crt , 🙁
thix copro is it ok for my laptop ?
https://www.ebay.es/itm/1PCS-Arithmetic-Proce … 3.c100033.m2042

Should work, this copro will go into the socket next to the CPU.

i think about vga port , i pluged into BIG Tv may be frecuencys not are same ?¿ , in a crt normal may be work ? , it is very rare not work easy , may be another post in video seccion ?

interesting http://www.digitanto.it/mc-online/PDF/Articol … 2_214_217_0.pdf

Normally CRT monitors are usually more tolerant whereas flat panel screens usually don't play nice with resolutions, for instance my old Samsung plasma TV straight up don't pick up VGA resolutions below 1280x1024/SXGA, while my old LG 702S CRT monitor can go as low as 640x480 (original VGA resolution, per standard).

If you have a CRT monitor or a very early LCD monitor, it's worth a shot maybe...

im loocking for a crt soon new information jejej