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From: as_m332@titan.kingston.ac.uk
Newsgroups: comp.sys.amiga.emulations
Subject: Re: ZX-Spectrum
Message-ID: <1991Mar5.105557.1@titan.kingston.ac.uk>
Date: 5 Mar 91 10:55:57 GMT
References: <1991Feb19.170118.29007@ugle.unit.no> <1991Feb22.142925.20529@daimi.aau.dk>
Sender: news@kingston.ac.uk (Network News)
Organization: Kingston Polytechnic
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	The way to get data from the Spectrum to the Amiga is to build 
	the following datalink:-

		Spectrum 9 pin		Amiga 25 pin
	    	(2) TX   <--------->    TX (2)
		(3) RX   <--------->	RX (3)
		(4) DTR  <--------->    DTR (20)
		(5) CTS  <--------->	CTS (5)
		(7)Ground<--------->Ground (7)

	I know this looks like it's wired the wrong way round, but on
	the Spectrum TX is an input, and RX is an output.
	Unfortunately, I've only just started reading this newsgroup
	so I don't know if anyone's already mailed this.
	To start sending from the Spectrum end, plug the 9 pin in
	Interface 1 and type :
		FORMAT "b";baudrate   (eg. FORMAT "b";2400)
		SAVE *"b" CODE startadd,length	

	To transfer the ROM this would be:  SAVE *"b" CODE 0,16384

	The border goes black as it awaits the OK from the Amiga.
	I've tried using NComm1.9's ASCII capture mode to get 
	the data but it only seems to get about 11k out of the 16k
	required.
	I had a bash at trying from AmigaBasic with this prog:
	
		10 open "COM1:2400,N,8,1" for input as #1
		20 open "Ram:spectrum.rom" for output as #2
		30 for i=0 to 16384
		40 print #2,input$(1,#1);
		50 next i
		60 close #1
		70 close #2

	At 300 baud, this gets around 14k.  I don't know why it's 
	missing characters at this speed. I have to break out of
	my program when the Spectrum's finished sending and CLOSE #1
	and #2 manually.
	If anyone can write a reliable Basic program to get all
	16384 bytes then I know of many people who would appreciate
	it.


		Sean Eaton (Maths, Kingston Poly, UK)