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One Meg

Submitted by Dan Dooré on Tue, 2006-04-18 15:47. Peripheral


SamCo


SamTek


1990

Very simple - One Megabyte of memory on an expansion card.

The memory could not be accessed from Basic but could be paged in at machine code level and was most useful to use as a RAM Disc with MasterDOS.

Most users with the One Meg also had a SamBus or a Two-up/Three-up interface expansion unit.

On the circuit board there is a jumper connection (bottom left above the capacitor) to allow a one from four position selection (which is factory set to position four). This enables up to four 1 Mb External Interfaces to be connected together giving a possible total memory capability of 4.5 Megabytes of RAM (4,718,592 bytes)

A few products utilised the extra memory such as E-Copier by Chris White and Sam Paint.


PDF Manual Scan at www.samcoupe-pro-dos.co.uk

Schematics

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1MB memory for the Sam

Submitted by Anonymous on Tue, 2006-04-25 10:40.

Completely useless!! As useless as a Kaleidoscope (someone just mention something???) We havent heard any details about the ever so useless Kaleidoscope yet! 32,000 colors on an 8-Bit computer? Yeah - right, pull the other one!

Maybe the 1MB of memory & the much fabled Kaleidoscpe (built properly this time!) would have worked wonders together if software developers actualy made use of them!! Like the Sam computer the 1MB memory is a total waste of good technology!!

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Kaleidoscope

Submitted by Dan Dooré on Tue, 2006-04-25 11:19.

The ‘Kaleidoscope’ was the example application of the Hardware Development Kit which was sold in the press as “Allowing 32768 colours” but in reality was just a tinkerers toy with resistors pulling down the RGB lines on the output.

As for the Meg - depends whether you had one or not really :)

The 800kB RamDisc was very, very useful as a virtual second drive for copying discs via the BACKUP command.

I modified many programs like Sam C to use the Ram disc for holding the libraries for compilation which was ace.

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One of the most useful

Submitted by davidl on Tue, 2006-05-16 12:25.

One of the most useful pieces of SAM hardware if you where involved in software production .. together with a second floppy drive and copy of MasterDos :)

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FULL DOCUMENTATION

Submitted by VELESOFT on Sun, 2006-06-11 22:04.

At my page http://velesoft.speccy.cz/samcoupe_1mb-cz.htm
is full documentation for 1MB interface for SAM COUPE.
CPB,schematic and equations for GAL16V8

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