Re: Need card Identified, please.

["Bill Garber" <willy46pa@comcast.net>]

"Michael J. Mahon" <mjmahon@aol.com> wrote in message
jeydnUULQOm75tDfRVn-qA@comcast.com">news:jeydnUULQOm75tDfRVn-qA@comcast.com...
: Bill Garber wrote:
: > "Michael J. Mahon" <mjmahon@aol.com> wrote in message
: > 2K-dnfsMY6yfLNHfRVn-qQ@comcast.com">news:2K-dnfsMY6yfLNHfRVn-qQ@comcast.com...
: > : Bill Garber wrote:
: > :
: > : <snip>
: > :
: > : > It appears that it's a ROM card. You either write your ROM to
: > : > the 6116 ram and back it up with the rechargeable batteries,
: > : > or you can burn eproms and insert them. If I can adapt it to
: > : > larger ram or Eproms, then it will be a nice card. Otherwise,
: > : > I have a FlashROM card that can go up to 512K easily enough.
: > : > What good is 16K in this day and age, when larger ROM cards
: > : > are possible??  :o)
: > :
: > : The capacity limit will depend on the decoding and bank
: > : select logic on the board.
: > :
: > : Given that it was intended for 2KB EPROMs/SRAMs, it would
: > : be surprising if it went much beyond that.
: > :
: > : All addressing of the on-card memory must be "windowed"
: > : into, I would guess, the 2KB I/O extension space on the
: > : Apple II, from $C800 to $CFFE.
: >
: > Sounds right, except that the switches might select which
: > 2K area is active, or be setting how many 2K areas are active.
: > We'll know more once the Docs are translated to English.
: > Assuming the number of people who have downloaded them is
: > correct, then I believe I should have OCR'd copies, and possibly
: > translated copies in a day or two. If so, thank you to whomever
: > is doing so.  :o)
:
: The DIP switches may set some default, but it would be much
: handier if all ROM enabling were controlled by bank select
: logic manipulated by software--which I expect is the case,
: because of the other chips on the card.

I wonder if Brian would also have software for this card.  :o)

: What the card probably doesn't support is mapping ROM/RAM
: larger than 2KB in "pages" to the windowed address space,
: which would make any size ROM/RAM inserted look like 2KB,
: at most.

This would be the case, unless, the card is a ROMdisk, in
which case, it would appear as up to a 16K disk drive.
Again, we will know more if and when I can get the docs
OCR'd and translated to English.  :o)

Apple II Forever, Apple II Together
Bill @ GarberStreet Enterprizez
---------------------------------------------
Web Site - http://garberstreet.netfirms.com
HOME OF THE RAM-4-GS
---------------------------------------------
Email - willy46pa@comcast.net
---------------------------------------------
File Server - http://68.34.184.147/
Username    - GarberStreet
Password    - all
---------------------------------------------