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BBC Micro to Desktop Cable

Although Eazylink2 has primarily been designed to be used with the Z88, it supports the 'built-in' Imp/Exp protocol that the Z88 uses. BBC Link also used this protocol which means in theory, file transfers should be possible between the BBC Micro and the Desktop without a Z88 being in sight.

See Z88 BBC Link for more details

This has not been proved yet

The BBC Micro to Desktop connection will only work with Imp/Exp. All the other modes described in this document only apply to the Z88. USB to Serial Adapters should work but as yet none of this has been proven. The author does not have a BBC Micro, so feedback would be appreciated.

Z88 to Desktop Cable

Z88 End	PC End

Z88 to PC Cable with Serial USB Adapter

There are two types of PC to Z88 Cables available that can be used on all the Desktop computer platforms.

Z88 9 way male to 9 way female (Later PC Standard)
Z88 9 way male to 25 way female (IBM PC standard)

WARNING - This is not a standard cable

Please DO NOT be tempted to rush out and get a standard 9 way male to female cable. They WILL NOT WORK. There are two reasons for this.

The Z88 connector end has no screws in them. If they are there, they will prevent the plug from being inserted into the Z88.
The wiring of the pins is different to the standard connections as the Z88 came out before the standard for the 9 way connection was established.

The correct cable (still sealed in a bag from Cambridge Computers) is available from Rakewell Ltd.

Using Adapters

If you use the Z88 9 way male to 25 way female cable, you will need to use a 25 to 9 way adapter to use the 9 pin plug on the modern Desktops or USB Adapters.. Please ensure that all the 9 way pins are connected. Some adapters only connect 3 of the pins, sometimes the only way to tell is to buy one and test the connections with a meter before use.

Desktop

RS-232 Serial Port

If your Desktop has a hardware RS-232 port, the cable can be used with it. If it hasn't, you can either elect to

Fit a 2 Port PCI RS232 Serial Adapter Card with 16550 UART

or use a

Serial to USB converters

Most desktops now have USB and not Serial ports. EazyLink2 will only work with a Serial to USB converter that the flow control supports 'hardware handshaking' and a driver available for the Operating System you are using. The cable type puts less strain onto the connectors than the adapter type.

Caution

This program has been designed to work with different Operating Systems, with different Serial/USB cables. Please help us update the 'Truth Table' below, with your results.

The Keyspan device has been shown to be tolerate on all Desktops.

Just because a Serial / USB cable works with another program does not mean it will work with this one.

Are the latest drivers being used?

The following tables show what has been tested, using the protocol test feature in the Eazylink2 application. The table shows

= tested (complete protocol test passed for 9600 BPS and 38400 BPS)

= tested, but protocol test failed

Blank = not tested

Drivers - Turn on Translate

The WCN Download site is in Chinese. Use the ZIP files and turn on translate.

Tested configurations of EazyLink2 client connecting to Eazylink popdown in OZ 4.7:

	Hardware	USB Serial Cables
	RS-232
	PCI2S550 or other RS-232 H/W	FT232R	FT232R CHIPI-X10 Product Identifier: 24597 Vendor Identifier: 1027	FT232R P24577 V1027	Staples (18762)	CH340 P29987 V6790		PL2303 HXD HX Rev D)	PL2303RA P8963 V1659	USA-19HS USA-49WG D:Keyspan USB Serial Port M: Keyspan
Drivers
MAC Signed Driver
Driver comments			Mac OSX: VCP 2.2.18 Linux / rPi: Built-in							Linux / rPi: Built-in
Suppliers
OS						9600	38400				USER REPORT
x86_64											VG
(x86_64)											VG VK

Tested configurations of EazyLink2 client connecting to Eazylink popdown in OZ 4.5:

	Hardware	USB Serial Cables
	RS-232
	PCI2S550 or other RS-232 H/W	FT232R	FT232R CHIPI-X10 Product Identifier: 24597 Vendor Identifier: 1027	FT232R P24577 V1027	CH340 P29987 V6790	PL2303 HXD HX Rev D)	PL2303RA P8963 V1659	USA-19HS USA-49WG D:Keyspan USB Serial Port M: Keyspan
Drivers
MAC Signed Driver
Driver comments			Mac OSX: VCP 2.2.18 Linux / rPi: Built-in					Linux / rPi: Built-in
Suppliers
OS									USER REPORT
x86_64									VG
x86_64	not avail.								GS
x386 / x86_64									GS
Arm 32bit									GS
(x86_64)									VG
x86_64									VG
x386									VG GS
Price 26 Jun 2014		£8.32			£2.21	£11.59		£26.02	VG
Price 30 Jun 2015	£26.25	£6.95 +£9.95	£12.36 + Post	£10.99	£1.37	£12.95	£7.49	£25.86	VG
Price 09 Feb 2016	£19.11	£6.45 +£9.95	£10.03 + Post	£10.99	£1.49	£14.95	£7.49	£26.10	VG

Tested configurations of EazyLink2 client connecting to Eazylink Popdown (for all OZ versions) v5.2.3-06:

Hardware	USB Serial Cables
	RS-232
	PCI2S550 or other RS-232 H/W	FT232R	FT232R CHIPI-X10 P24597 V1027	FT232R P24577 V1027	CH340 P29987 V6790	PL2303 HXD HX Rev D)	PL2303RA P8963 V1659	USA-19HS USA-49WG D:Keyspan USB Serial Port M: Keyspan
OS									USER REPORT
OS X 10.11 (x86_64)	not avail.								VG
x386 / x86_64
Arm 32bit
(x86_64)									VG
x86_64									VG
x386

Update USB Drivers

TIP Please ensure the latest drivers are installed.

When Eazylink2 uses a Serial Port or a USB - Serial connector, check that the latests drivers have been correctly installed before running the program. With desktop Operating Systems being updated, USB drivers that used to work, may not work after updating the operating system. A disk with the manual and drivers which are normally supplied with the converter, can be years out of date. You are advised to read the manual to see which driver it uses. Use Google to search for the latest driver. Some operating systems will automatically find the latest's driver it requires when the USB Adapter is used - e.g. Windows 8.1

For example there is already a later driver ( 08/08/14 3.4.2014 ) than the one shown below. This is why it is important to find the latest drivers to ensure good communication between Eazylink2 and your Desktop.

xp

Example

Device Manager without
correct driver installed.

For example - this driver is dated 04/11/2011

this driver is dated 03/06/2009

Manufacturers update their drivers during the life of the product. These updates may need to be obtained manually. It is a good idea to periodically check these sites to see if a later and improved driver is available.

Windows Update can update the drivers if they are manually selected. They do not get updated when automatic updated are used.

Device Manager (Optional)

Eazylink 2 Automatically finds the correct Serial Port

The serial port should automatically be found. If this does not happen the following information may be useful.

	Before running the program, it can be useful to know the device name that the operating system has allocated to the serial port you are using to connect to the Z88. This is either a physical number that is on the computer e,g, COM.1 COM.2 (device names on Windows), or a virtual one (see below). If you are using a Serial to USB converter the driver will automatically allocate a new serial port device name. Please refer to the manufacturer's instructions for details how to find out that name (COM port number on Windows). This COM port may also be examined or changed in the Device Manager. Original software for the Z88 could only select COM.1 or COM.2, so if they are required, here is how to change it from COM3 (the automatic choice that was selected in this case) to COM.1. Select the Device Manager Ports (COM & LPT) Prolific USB-to-Serial Comm Port (COM3) (or whatever device you are using). Properties Port Settings Advanced ... Change COM Port No to COM1 OK Note: The parameters shown in the 'Advanced Settings' are ignored by this program.
Mac Users
	On the Mac selection of the COM port uses tty. Just select the correct name that your driver uses.
	Here it is again on a later Operating System on the Mac, but it is showing two drivers, the old one (which is ticked) and will fail if used with OS X. Which just shows how important using the driver really is. It is also good practise to remove any old drivers. A good site that shows you how to do that is https://www.mac-usb-serial.com/wordpress/support/troubleshooting/

Connect the Z88 or BBC Micro to the Desktop