| Author |
Message |
xavier.tastet@gmail.com
Guest
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 Posted:
Sun Dec 18, 2005 1:15 am Post subject:
rs232 and picoblaze :) |
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Hi all !
I bought a S3board from digilent. I ran some program to test it,
included a serial parallel multiplier :) I'm currently thinking of a
new project "just for fun". When I learned vhdl at university, we start
a project by coding a very simple processor, who looks like a very
simple picoblaze.
Do you think if it's do-able to implement a pico blaze, plug it
(internally in the fpga) with an uart and to run a kind of monitor ?
For example with a 68K board, when from the console you can access to
memory, dump or modify it, run some assembler command etc etc. I would
like to run a kind of very simple SBC with this system.
I read the documentation about picoblaze, but I'm afraid that the
program must be written when compiling the vhdl ? Could we load the
execution code, for example in the sram ?
Thanks a lot, xavier. |
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Adrian Knoth
Guest
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| Posted:
Sun Dec 18, 2005 1:15 am Post subject:
Re: rs232 and picoblaze :) |
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xavier.tastet@gmail.com <xavier.tastet@gmail.com> wrote:
Hi!
| Quote: | I read the documentation about picoblaze, but I'm afraid that the
program must be written when compiling the vhdl?
|
This is possible. You can also use your own module which evaluates
the address signal and returns the opcodes.
Actually, the compiled-in vhdl is just a BRAM, I don't see why
one shouldn't replace it by an SRAM-handling module.
| Quote: | Could we load the execution code, for example in the sram?
|
Perhaps you might also want to have a look at
<http://www.xs4all.nl/~marksix>, there is an UART-example
available. If you want to download the code from the host,
you can use the BRAM as a handler and poke the stream from
the rs232 to the SRAM, afterwards switching the instruction
source (with another module located between BRAM and SRAM,
probably controlled by one of picoblaze's outports).
--
mail: adi@thur.de http://adi.thur.de PGP: v2-key via keyserver
Die Liebe ist wie ein Bauantrag: am besten, du kümmerst dich nicht drum,
dann erledigt sich die Sache von selbst (Jochen Busse in "Das Amt") |
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Antti Lukats
Guest
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| Posted:
Sun Dec 18, 2005 9:15 am Post subject:
Re: rs232 and picoblaze :) |
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<xavier.tastet@gmail.com> schrieb im Newsbeitrag
news:1134858416.979455.73070@o13g2000cwo.googlegroups.com...
| Quote: | Hi all !
I bought a S3board from digilent. I ran some program to test it,
included a serial parallel multiplier :) I'm currently thinking of a
new project "just for fun". When I learned vhdl at university, we start
a project by coding a very simple processor, who looks like a very
simple picoblaze.
Do you think if it's do-able to implement a pico blaze, plug it
(internally in the fpga) with an uart and to run a kind of monitor ?
For example with a 68K board, when from the console you can access to
memory, dump or modify it, run some assembler command etc etc. I would
like to run a kind of very simple SBC with this system.
I read the documentation about picoblaze, but I'm afraid that the
program must be written when compiling the vhdl ? Could we load the
execution code, for example in the sram ?
Thanks a lot, xavier.
look at thre are several examples |
http://www.dulseelectronics.com/
BTW we have a gui for the Picoblaze based Logic Analyzer from the dulse
website
Antti |
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