A few i/o lines to a bin to decimal decoder chip which is then connected to
the eprom/flash chip enable lines. Then write some code to calculate
branches, if branching to an address space in a different rom, toggle i/o
lines accordingly. Easy. BTW, you may want to add a few wait states when
switching, depending on the speed of the rom.
"spotato" <replytonewsgroup@notavaliable.com> wrote in message
news:3f12024a_2@news2.prserv.net...
I need a 8051 sample circuit with 512K byte ( = 64K x 8 ) code memory.
For 8051, only code memory bank switching can make it possible.
Thanks.
"Joseph Goldburg" <wizard1@SPAMnetspace.net.au> wrote in message
news:ber98f$2k91$1@otis.netspace.net.au...
What do you mean.
Code memory back switching.
If you need more memory in your 80c51 try the
Philips P89C669 which has 96k pf flash code memory.
JG
"spotato" <replytonewsgroup@notavaliable.com> wrote in message
news:3f0f8630_2@news2.prserv.net...
Anyone have a sample circuit for 8051 Bank-Switching , or any related
link
are welcome.
Thank you !
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