The Analogue Turbo Duo clone shipped in time for Christmas 2023. Are you happy with yours ?? Find firmware updates here.
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Messages - thesteve

#101
the working schematic

SWITCHLESS.jpg
#102
switchless mod success

select.jpg switchless logic.jpg 
#104
i have started on my express

exp1.jpg
exp2.jpg exp3.jpg
#105
yippy chips are here

IMAG0017.jpg
#106
just an update.
im still waiting for parts to start testing the proposed chip.
today i was probing around on a TG16 and confirmed the controller page and video bus become active only after a successful boot, making boot detection possible.

auto1.gif
#107
got it
necromancer.gif
#108
heres a concept express switchless.
the unused inputs need to be grounded.
we may be able to use the other gates to complete autodetect

express.gif
#109
here's another schematic utilizing the remaining pins for latch and reset to allow swap after boot fail.

with a little more info I should be able to make an auto mod trigger circuit, to work with this one.

a switchless would be simple from here.

pce2.gif
#110
heres a circuit that should make the board half the size.
note there two unused channels on this chip that could be used for a latch circuit.
note the short leads to board, long to cart.

pce1.gif
#111
Off-Topic / Re: Show us your desktop!
04/29/2011, 11:34 PM
IMAG0014.jpg
thats a 50" NEC display
#112
Off-Topic / Re: Show us your desktop!
04/29/2011, 11:33 PM
Quote from: Ratix on 09/25/2008, 11:08 PMIMG
Guardian Legend, @Ratix...great game