The PC-9801 was a very popular PC in Japan. PC-9801's design was very similar to IBM-PC, but was slightly extended. VRAM (Video RAM) is strongly extended from original IBM-PC, enabling it to display kanji characters without bitmap memory (as ASCII characters). But I/O systems, Interrupt systems are almost the same.
There were in fact three models : F1, F2 and F3. Whereas F1 & F2 models have only 128k RAM, the F3 had 256 kb RAM and 10 Mb hard-disk built-in.
More info anyone ?
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Thanks to Nomura Hisayuki for the info
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NAME
PC 9801 F
MANUFACTURER
NEC
TYPE
Home Computer
ORIGIN
Japan
YEAR
1983
KEYBOARD
Full-stroke keyboard with separated numeric keypad and arrow keys
CPU
i8086-2
SPEED
8 or 5 Mhz
RAM
128 kb (up to 640 kb)
VRAM
204 kb
ROM
N88-Basic + Kanji
TEXT MODES
80x25 , 40 x 25 , 80 x 20 , 40 x 20
GRAPHIC MODES
640 x 400 with 8 colors. 2 virtual screens
COLORS
16
SOUND
One channel beeper. Built-in internal speaker
I/O PORTS
C-Bus
BUILT IN MEDIA
2 x 5''1/4 disk-drives
OS
MS-DOS , N88-Disk Basic (extended Basic for control FDD)
