Hello to all AF-Members,
specially to those that have a Newton or a Mimeo or a Apple1,
i started to develop 3 kinds of expansioncards for the Mimeo, Newton and Apple1:
1 card will be designed as Prototypcard for own developments
1 card will be designed as ROMcard for 2708/2716 Eproms/ROMs ro enable the User
to add things like Basic or Programmers Aid or other software resident in EPROM/ROM
on the card es resident expansion ( which reduces loading procedures )
1 card will be designed ro be used as RAMcard with either MK4096 or MK4116 and enabeling
the user to expand memory by 4 kB, 8 kB, 16 kB or 32 kB without the need to modify the
mainboard and the used RAM will be selectable per each row similar to the Apple II with
2 plugs to be set per row.
Additionaly I want to design a slotexpansioncard to be plug to the side of the mainboard
expanding the Mainboard by 2 more slots and with own powersupply input and regulation
to enable user the possible usage of up to 3 expansioncards and 2 of them ( those on the
extended expansioncard ) having possible independent powersupply of their own and not
causing additional load to the powersupply on the mainboard.
I would like to figure out, when the carddesign is finished how many people will be interested
in such PCB´s and in which PCB´s. This will become important when negotiating with a company
that would execute the task of making these boards... and knowing which amount of cards to be
made from each kind of card..... this targets to the problem, that the more cards will be made,
the better the price would turn out per card because i only want to make one single run of each
card matching the amount of users that want to order some cards. The price will be dependent to the
amount of users and the amount of cards and i will then execute orders only to those which have
afterwards taken part in a kind of "per-order-process" - ( that will be without any charge )
and charging only the cost from PCB company per card divided by Users that ordered the cards and
adding only shipment cost to the user.
Within the next days i will also supply a link to the basic layoutdrawings ( and required population of
each card ) here in this thread.
Interested users plaese issue your needs by pm to me here at AF.
For besic calculation of shipment cost - i am located in Germany and dependent to the amount of
cards i intend to mail the orders to the users by registrated lettermail with the German Post as
international lettermail ( if more than 3 cards will be taken by a user it will be needed to mail
the order as registrated parcel ). Probably users living close together could try to communicate
with each other to organize instructions for combined shipment to reduce shipment costs.
i´d like to perform the tasks of getting cards to be made and executing the shipments before christmas/
new years eve.