Quote:
Originally Posted by Timbucus
Mine is the respin that uses 2114 but draws about 1.4Amps on the 5V with 6 of them onboard (3K) and two 2708 for the level 7.2 HUMBUG. The Expansion board has 1 6264 RAM and now (thanks to you) two 8K EPROMS but has its own 5V regulator so not including the consumption on that.
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I will need to look at what I do for memory in my restoration project as I do not have the original 2111-2 any more but have loads for 2114s.
So the respin PCB is not the same design as the original PCB ? are there any unbuild original PCB out there ?
I found the old Transam catalogue (
https://sites.google.com/view/transam-triton/transam ) from the summer of 1979 the 2111-2 back then cost £2.32 so the 3k onboard memory would have cost £55.68 then and would be £260 now.
Its interesting to see the the VDU chip was the most expensive chip on the board at £15.95 in today money ( from this site
https://www.inflationtool.com/britis...alue?amount=16 ) that would be a massive £74.51 to produce a display of only 64x16 thank God for Moore's law.
I found a site in Canada that will do 24x2111-2 for £45 but they only ship to Canada and the USA so about the same price back in 1979.
From the catalogue (
https://sites.google.com/view/transam-triton/transam ) the transformer only cost £7.00 I wonder how much it would be to have one made today given its unusual 8.5 volts secondary winding.