Nas-Sys Tool Kit

The following was contributed by Constantin Olbrich quite a while ago.Thanks Constantin!

(I did the conversion to HTML – please don’t blame him!)

The NAS-SYS Toolkit comes in two 2708 and is adressed at B000..B7FF.
It is designed for NAS-SYS 1, Naspen and the 8K Microsoft Basic.
I found the original Toolkit and Naspen EPROMS in my EPROM box,
and now, these EPROMS are still working and heating on the RAM A Board.

The suggested memory map was:

B000-B7FF	NAS-SYS Toolkit	2*2708
B800-BFFF	Naspen	2*2708
C000-C3FF	NAS-SYS Debug 3.1	1*2708
C400-CFFF	NAS-DIS Disassembler	3*2708
D000-DFFF	ZEAP 2.1 (with the “:” command)	4*2708
–	–	——–
–	–	12 Eproms: 8 on N2, 4 on RAM A
–	–	–
E000-FFFF	NASCOM ROM Basic	8K ROM

The Toolkit has the following functions:

Keyboard:	Automatic keyboard repeat feature (incompatible with NAS-SYS 3)
Printer:	A Printer Routine with handshake don’t know, if it was a parallel or serial printer. Serial handshake is possible with a small hardware modification.
Main Menue:	(displayed at startup EB000 ) </table BC Basic Cold B Basic Warm N NAS-SYS P Naspen Kx Keyboard Options Px Printer Options Basic Interpreter: Some new keywords (incompatible with NAS-SYS 3) The new keywords are active, when BASIC is started from the Toolkit. RENUMBER renumber the program lines of loaded basic program STEP single step FIND find a string in loaded basic program HELP find source line/statement after a runtime error HEX convert hex to decimal (max 10 arguments) usefull for generating DATA statements INKEY & RINK Keyboard wait and scan These routines were called via USR() MON back to NAS-SYS APPEND Append a basic program to an existing program AUTO Auto line number for easy typing DELETE Delete programe lines from xx in range zz DUMP Dump numeric and string Variables, but no arrays As the ZEAP 2.x Package, the NAS-SYS Tookit checks, if it is run out of an EPROM or out of RAM, which was a “copyright violence”. To run the NAS-SYS Toolkit in RAM change: b020=0 b021=0 b23e=0 b23f=0 b247=0 b248=0 There are also some patches for the Toolkit to work with NAS-SYS 3. But these patches are, not as the others, not 100% ok, e.g. RENUMBER don’t work.

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