Changes
/* Specifications */
== A Surgical Guide To The Amstrad Notepad Computer ==
This page is based on Hans-Jürgen Böhling's "surgical guide to the Amstrad NC". The original document is avaliabe here [https://web.archive.org/web/20141214160211/http://home.arcor.de/h.boehling/nc100.htm] (author's website) or here [[Media:sg-nc100.zip]] (local copy)
=== Amstrad Notepad Computer - What is it? ===
The model [[NC Series|NC100 ]] is about DIN A4 size with a LCD 8 lines * 80 characters
screen, nearly full size keyboard, a PCMCIA memory card slot on the right
hand side and four coloured keys. The Notepads have standard Centronics
Processor : Z80 compatible CMOS
Operating
frequency : 6 4.606 MHz
Memory : 64K byte internal
(15K system-, 11K upper-, 38K lower memory)
Storage : PCMCIA/JEIDA Memory Cards (PC-Cards) Type I
max. 1M byte SRAM 5 Volt
Display : 480*32 64 pixel disply display (usually 80*8 characters)
Weight : 930 g
Height : 22 mm
- BBC-BASIC with Assembler support
</pre>
=== How to get the Firmware Number? ===
Ã────┼───────────────┼────────┼───────────────────────────────────────Â
║302 │NEC Japan │4*34=136│µPD 65034 ║
║ │D65034GD093 │PLCC 136│Customer Chip 136│Custom ASIC ║
Ã────┼───────────────┼────────┼───────────────────────────────────────Â
║303 │NEC Japan │2*16= 32│27C2001 = CMOS EPROM 256K*8 bit ║
</pre>
=== The Customer Custom Chip (IC302) ===
<pre>
Type : µPD 65034
Manufacturer : NEC Electronics
Description : Customer Custom Chip with multiple funktions
Process : CMOS
Supply Voltage : +5V
Package : PLCC 136
The chip has multiple funktionsfunctions:
- Clock generator for CPU and UART
- Built-in 26*4 bit RAM
- 4-bit bidirectional data bus
- 4-bit adress address input
- Directly connectable with CPU bus
- Capable of battery backup
</pre>
[[Category:NC Series]][[Category:Amstrad Products]][[Category:Non CPC Computers]]
