I've received the laptop somewhere around 1990 (or 1991), and it wasn't literally my laptop, since I was kinda too young to own or need one (I had my Atari 800 XL then, what more could I possibly want?). So, it was my fathers, but I had unlimited access to it, so I could play games like North & South (the link leads to the Amiga version of the game, the PC version had worse graphics, especially on a CGA mono display ;p), or code in my favorite GW-BASIC'u (yees, it was Microsoft GW-BASIC).
OK, enough of personal history. I'm sure you're more interested in what's inside this machine:
CPU : 80C88 (I think it was around 4MhZ)
RAM : 640 KB
OS : I've had Dr-DOS and some old MS-DOS on floppies
HDD : the what? nope, none
Floppy : 2x 3,5' DD (720KB)
GFX : CGA Mono
Monitor: LCD ?320x200? Monochromatic
Porty : Printer Port (LPT), COM (RS232-C), RGB Out (no idea)
Bateria: there was one, but I don't remember how good it was
As you can see, it's a collection of interesting things. Let's start with the CPU. It was an Intel 80C88 which is a younger brother of 8088, and the older brother of 80188, 80186 or 80286. So it was a "normal" x86, it just didn't know that yet (x88 ;p). And I guess the instruction set wasn't so extended.
The second thing is the RAM. Do you remember the famous quote "640K ought to be enough for anybody" (which Bill denies he said btw)? Well, on this machine you could really find it out if thats enough! And to tell you the truth, the 640KB was quite enough, as long as you didn't go outside of year 1991 ;>
The HDD was not present (there was a version of this laptop marked B320 which had an HDD), instead, there were two FDD 3.5' DD (DD meaning Double Density - 720KB on a disk; the reader might be more familiar with the HD (High Density) 3.5' disk which were 1.44MB, or even with the ED (Extended Density) 3.5' disk which were 2.88MB).
As for the OS, you had a partial Dr-DOS or MS-DOS (I think it was something around 3.2 and 4.0 versions). "Partial" meaning you had 3-4 files: command.com (the command line interpreter), io.sys (the kernel) and config.sys and/or autoexec.bat (the start scripts). Of course you had no need for stuff like himem.sys (Upper Memory Area driver) or EMM386.exe (XMS/EMS driver) for obvious reasons - the laptop had only 640KB RAM.
As for the GFX Card, there was a CGA Mono, which is a little funny - CGA stands for Color Graphic Adapter, so there supposed to be some Color. However the LCD was monochromatic (black and white), so it was hard to display something colorful there (maybe the RGB Out port was more colorful; I don't recall if I had an occasion to check it). However it was good that it was CGA! On my PC (80286) I had a Hercules graphic card (monochromatic) and I had to run all sorts of CGA emulators (like color.com) to get a game running. Well, on the laptop I didn't have to do that ;>
As for ports, just the standard: LPT, COM and some RGB Our that looks a little similar to D-SUB, it just had two, not three, pin rows (like COM aka RS232).
You know what's great about this 20-year old laptop? It still works! With the same speed as in the old days (well, I should use the word 'slowness' instead of 'speed', but I think it's just me, not the laptop).
Now a short movie with POST (I can't seem to find a FDD with an OS):
And some pictures:
And thats all for today!