PPEP has several components:
hardware The hardware board that you plug on the PC parallel port.
This is a double sided board with a few TTL chips, a TL 497
and a 28-pins programming slot. The hardware supports only
one programming voltage (either 12.5 or 12.75). It can
program a 2764/27C64, 27128/27C128 or 27256/27C256.
drivers A GNU/Linux driver that is loaded in the kernel and which
controls the hardware through the parallel port. More
drivers may be added in the future. The Linux driver
is written in C.
tools A tool that allows programming/reading the eproms supported
by the hardware. The tools are written in ADA. They must
be compiled with GNAT.
To build the drivers and the tools, you must do the following:
1/ Run the configure script:
./configure
This will configure 'make.defs' and setup the path of you Linux includes
Verify the flags that are used for building the driver and
make sure they are compatible or the same as the ones used
when building your kernel.
Note: The path of Linux includes is hard-coded to /usr/src/linux/include
2/ Build everything with make:
make
To install the driver do:
1/ Log as root
2/ Copy the PPEP module in /lib/modules/<kernel>chars
cp drivers/linux/ppep /lib/modules/2.2.19/chars/ppep
3/ Update the module dependencies using depmod
/sbin/depmod
4/ Create the ppep devices using mknod
This step is necessary only for Linux 2.2. It is not necessary for
Linux 2.4
mknod /dev/ppep0 c 120 0
5/ You can also load the module
/sbin/insmod ppep
To read a 27128 eprom:
epprg -r file.bin -t 27128
the file 'file.bin' will contain the binary dump of the 27128 eprom.
To write a 2764 eprom:
epprg -w file.bin -t 2764
I've tested PPEP hardware, driver and tools on a Linux 2.2.17, 2.2.19
and 2.4.8 kernel with the following eproms:
2764A-2 Intel Vpp 12.5V
27128-25 Vpp 12.5V
27256-1 Vpp 12.5V
27256-2 Vpp 12.5V
27256-25 Vpp 12.5V
ppep-0.2.tar[1].gz
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