From: Marko Mäkelä (msmakela_at_gmail.com)
Date: 2007-03-28 10:15:57
On Wed, Mar 28, 2007 at 09:39:33AM +0200, MagerValp wrote: > >>>>> "AC" == Anders Carlsson <firstname.lastname@example.org> writes: > > AC> I need to get access to an EPROM reader/burner to dump those chips > AC> safely. The 2764:s I could read off a C64 cartridge with EPROM > AC> slots, but I don't think I have anything to read the 27128. > > Couldn't you put it in the expansion socket in a C128? I don't have > the pinout handy, but I think you'd be ok. Yes, that should be OK, and Anders should be able to use the machine language monitor to read it. I don't know which bank, but I'd try the following commands: m 48000 4bfff with 4 replaced by 8 or c and 8,b replaced by 4,7 or c,f (or 0,3 - very unlikely) If I remember correctly, the function ROM socket is for a 27256 (32 kilobytes). The 27128 is only 16 kilobytes, so it should show up as two identical copies at successive addresses. It is possible that the KERNAL doesn't support a bank configuration where the function ROM is visible. If none of the above commands work, you can write a simple copying program in machine language that switches MMU banks and copies the data to RAM, where it can be examined by the machine language monitor. Marko Message was sent through the cbm-hackers mailing list
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