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Message
From: Adam Pierce<adam@d...>
Date: Thu Feb 28 11:47:59 CET 2008
Subject: [oc] ZPU
I want to know if the ZPU instruction set is documented anywhere. I
managed to synthesize the core and have compiled a very simple test
program but I cannot get it to run. If I understood a little more about
what the opcodes did, I could figure out what I am doing wrong. Maybe
this is an endian-ness issue but I can't tell.
Here is my simple example. I am running Cygwin on Windows XP.
$ cat looptest.c
// Dead simple test program
main()
{
while(1)
;
}
$ zpu-elf-gcc -o looptest.elf looptest.c -nostartfiles
/home/Adam/zpu/bin/../lib/gcc/zpu-elf/3.4.2/../../../../zpu-elf/bin/ld: warning:
cannot find entry symbol _start; defaulting to 00000000
$ zpu-elf-objcopy -O binary looptest.elf looptest.bin
$ hexdump looptest.bin
0000000 088c 8c02 0b0c 0b0b fb0b 0039
000000b
$ java -classpath zpu/simulator/zpusim.jar com.zylin.zpu.simulator.tools.MakeRam looptest.bin
0 => x"8c08028c",
1 => x"0c0b0b0b",
Øyvind Harboe wrote:
>> Hi everyone, I'm new to this list. I'd like to talk about some
>> difficulties I'm having with the ZPU core, is this the right place ?
>>
>
> Here or attachment.htm
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