NEC POWERMATE PORTABLE APC IV
Chipset
Sockets 
FSB speed 10MHz
Form factorLPX (max 229 x 330 mm)
Dimensions330mm x 218mm
Cache
None/Integrated in the CPU
Max RAM size
640KB4.625MB(use 2x 2MB expansion card)
RAM type DIP-16 (1bit)
PSU connector
I/O ports1x
Floppy interface
1x
MDA
1x
Parallel
2x
Serial
Expansion slotsEmpty
Known issues
- Expansion slots are on proprietary riser
The listed slots are on the riser card that came with the motherboard.
If you have this board make sure you have the riser for it.
Last updated 2026-06-11T10:17:31Z
Board info score is 8.3/10
Chips
-> Chipset part
CHIPS and Technologies 82A203 (High Address Buffer)
CHIPS and Technologies 82A204 (Low Address Buffer)
CHIPS and Technologies 82A205 (Data Buffer)
CHIPS and Technologies 82C201 (System Controller)
CHIPS and Technologies 82C202 (Address Decoder)
(multiple brand) 82C206 (DMA, IRQ, timer and RTC ctrl.)
-> Floppy ctrl.
-> Human Interface
-> Miscellaneous
-> Signal transmitter/receiver
-> UART ctrl.
-> Video
No drivers available
1 board document available
Release date
File
Logs
Chip
Release date
File
Logs
Chip
Release date
File
Logs
Chip
Release date
1995-11-30
File
Logs
Chip
Release date
1990
File
Logs
Chip
Release date
1996-08-09
File
Logs
Chip
Release date
1996-05-15
File
Logs
Chip
Release date
1990-07
File
Logs
Chip
Release date
File
Logs
Chip
Release date
File
Logs
Chip
Release date
1995-11-22
File
Logs
Chip
Release date
1989-03
File
Logs
Chip
Release date
File
Logs
Chip
Release date
1994-07
File
Logs
Chip
Release date
1996-01
File
Logs
Family
Release date
File
Logs
Image 1 of 4 (David Hayes)
Image 2 of 4 (David Hayes)
Image 3 of 4 (David Hayes)
Image 4 of 4 (David Hayes)
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