thanks for all the help so far, but the story ain't over yet
have an osepp uno 3 plus hooked up to a working custom 328p chip (gnd, spi and d10 to res, sep-pwr) with working firmware in it.
examples->arduinoisp running isp sketch
reading flash with
avrdude -P /dev/ttyUSB1 -b 115200 -c arduino -p m328p -v -U flash:r:test.hex:i
result
avrdude: Version 5.10, compiled on Jun 29 2010 at 03:44:14
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2009 Joerg Wunsch
System wide configuration file is "/etc/avrdude.conf"
User configuration file is "/home/xxxx/.avrduderc"
User configuration file does not exist or is not a regular file, skipping
Using Port : /dev/ttyUSB1
Using Programmer : arduino
Overriding Baud Rate : 115200
AVR Part : ATMEGA328P
Chip Erase delay : 9000 us
PAGEL : PD7
BS2 : PC2
RESET disposition : dedicated
RETRY pulse : SCK
serial program mode : yes
parallel program mode : yes
Timeout : 200
StabDelay : 100
CmdexeDelay : 25
SyncLoops : 32
ByteDelay : 0
PollIndex : 3
PollValue : 0x53
Memory Detail :
Block Poll Page Polled
Memory Type Mode Delay Size Indx Paged Size Size #Pages MinW MaxW ReadBack
----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
eeprom 65 5 4 0 no 1024 4 0 3600 3600 0xff 0xff
flash 65 6 128 0 yes 32768 128 256 4500 4500 0xff 0xff
lfuse 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
hfuse 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
efuse 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
lock 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
calibration 0 0 0 0 no 1 0 0 0 0 0x00 0x00
signature 0 0 0 0 no 3 0 0 0 0 0x00 0x00
Programmer Type : Arduino
Description : Arduino
Hardware Version: 3
Firmware Version: 4.4
Vtarget : 0.3 V
Varef : 0.3 V
Oscillator : 28.800 kHz
SCK period : 3.3 us
avrdude: AVR device initialized and ready to accept instructions
Reading | ################################################## | 100% 0.00s
avrdude: Device signature = 0x1e950f
avrdude: safemode: lfuse reads as 0
avrdude: safemode: hfuse reads as 0
avrdude: safemode: efuse reads as 0
avrdude: reading flash memory:
Reading | ################################################## | 100% 4.77s
avrdude: writing output file "test.hex"
avrdude: safemode: lfuse reads as 0
avrdude: safemode: hfuse reads as 0
avrdude: safemode: efuse reads as 0
avrdude: safemode: Fuses OK
avrdude done. Thank you.
:200000000C9462000C948A000C948A000C948A000C948A000C948A000C948A000C948A00B8
:200020000C948A000C948A000C948A000C948A000C948A000C948A000C948A000C948A0070
......
:207E0000112484B714BE81FFF0D085E08093810082E08093C00088E18093C10086E08093FC
:207E2000C20080E18093C4008EE0C9D0259A86E020E33CEF91E0309385002093840096BBAD
now i loaded
// Atmega chip fuse detector
// Author: Nick Gammon
// Date: 22nd May 2012
// Version: 1.8
and ran the output on a terminal
Atmega chip detector.
Entered programming mode OK.
Signature = 1E 95 0F
Processor = ATmega328P
Flash memory size = 32768
LFuse = FF
HFuse = D6
EFuse = FC
Lock byte = FF
Clock calibration = 99
Bootloader in use: Yes
EEPROM preserved through erase: Yes
Watchdog timer always on: No
Bootloader is 512 bytes starting at 7E00
Bootloader:
7E00: F8 94 6F EF 6D BF 68 E0 6E BF 22 24 33 24 A8 95
7E10: 60 91 60 00 60 61 7F E0 60 93 60 00 63 FD 70 93
7E20: 60 00 58 9A 59 9A 51 9A 21 E0 30 EA 63 E0 F1 01
7E30: EF 01 F1 01 01 97 60 40 48 99 E1 F7 D9 F1 21 97
First 256 bytes of program memory:
0: 0C 94 34 00 18 95 00 00 18 95 00 00 18 95 00 00
10: 18 95 00 00 18 95 00 00 18 95 00 00 18 95 00 00
20: 18 95 00 00 0C 94 BA 09 18 95 00 00 18 95 00 00
30: 18 95 00 00 18 95 00 00 18 95 00 00 18 95 00 00
how comes that
:20000000 0C 94 62 00 0C 94 8A 00 0C 94 8A 00 0C 94 8A 00 avrdude, doesn't match
0: 0C 94 34 00 18 95 00 00 18 95 00 00 18 95 00 00 board-detector, which seems to be right
:10000000 0C 94 34 00 18 95 00 00 18 95 00 00 18 95 00 00 15 ... org hex file
or at the bootblock
:207E0000 11 24 84 B7 14 BE 81 FF F0 D0 85 E0 80 93 81 00 doesn't match
7E00: F8 94 6F EF 6D BF 68 E0 6E BF 22 24 33 24 A8 95 have no reference
thanks and cheers, blue2u