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Re: How do I add firmware to a card?
- Subject: Re: How do I add firmware to a card?
- From: russotto@grace.speakeasy.net (Matthew T. Russotto)
- Date: Sun, 07 Jan 2007 12:50:34 -0600
- Newsgroups: comp.sys.apple2
- Organization: DiS(L)organized
- References: <459b763f$0$38173$c30e37c6@lon-reader.news.telstra.net> <459dc72b$0$20028$5a62ac22@per-qv1-newsreader-01.iinet.net.au> <459ed26c$0$38167$c30e37c6@lon- <dJKdnSCmmNzA-D3YnZ2dnUVZ_ragnZ2d@comcast.com>
- Xref: g2news2.google.com comp.sys.apple2:15977
In article <dJKdnSCmmNzA-D3YnZ2dnUVZ_ragnZ2d@comcast.com>,
Alex Freed <alexf@mirrow.com> wrote:
>"David Wilson" <mcs6502@gmail.com> wrote in message
>1168135177.894809.275730@i15g2000cwa.googlegroups.com">news:1168135177.894809.275730@i15g2000cwa.googlegroups.com...
>>
>>> The approach you mention is also worthwhile, although many uC's don't
>>> allow code execution from their volatile memory which may cause
>>> problems. It does open the door for some interesting modifications
>>> though.
>>
>> Good point. I forgot many (most?) uC use the Harvard architecture.
>>
>A notable exception is ARM. There are ARM7 chips with 8K or more of internal
>RAM and
>64K or more or FLASH for around $4 these days. The only problam is they
>don't come
>in DIP cases.
The TI MSP430 also allows execution from ram.
--
There's no such thing as a free lunch, but certain accounting practices can
result in a fully-depreciated one.