ZXPAND and Lambda 8300?

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ZXPAND and Lambda 8300?

Post by Paul » Mon Sep 26, 2011 6:34 pm

has this been tried?
At least the RAM should work or not?
I looked at the BUS description which looks similar to ZX81, but there seem to be some missing connections where it states internaly not connected.
Sir Morris, could you please state which lines are needed? Or have a look at the BUS description and say which missing lines have to be connected internaly.

Has anybody tried any ZX81 Hardware on the PC8300?
I only know the other way, the Lamda color module which works fine on ZX81 (with missing commands beeing made by pokes).

I wonder who has any experiences with Lambda 8300 (or compatibles)
In theory, there is no difference between theory and practice. But, in practice, there is.

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Re: ZXPAND and Lambda 8300?

Post by sirmorris » Mon Sep 26, 2011 8:42 pm

You need /M1 and /RESET connected. I'm surprised the machine could get away without /m1 on the expansion connector...
--=== ZXpand+ ... A more moderner all-in-one upgrade solution for ZX81 ===--
* SD/MMC storage * 32K Hires-capable RAM * AY sound chip * Joystick port * Serial *
* BASIC enhancements - plug & play * Reset button * Auto-boot facility *

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