XPS says that my C0 and E0 ROMs are failing checksum check. Should I be concerned about that? I have an eeprom programmer if that helps - but I would need an UV lamp! :)
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Do yourself a favour: Orer the //e Enhanced Kit from ReActive Miicro. This will give you not only fresh ROMs, butalso the 65C02 CPU and the newer char generation ROM, for the full enhancement update.
But I already have the 65C02 and I have an eeprom burner!
What I am trying to understand if this checksum error is some sort of an issue or maybe XPS is expecting different ROMs (not sure where it takes the checksum value?). If it is NOT supposed to happen, then I would be happy to re-flash my ROMs with the appropriate versions.
It may not know how to validate the enhanced ROMs. Is something not working, that requires diagnostics?
https://mirrors.apple2.org.za/Apple%20II%20Documentation%20Project/Computers/Apple%20II/Apple%20IIe/ROM%20Images/
Ciao Tony,I think you're making some confusion.I don't know that EEPROMs are compatible with ROMs.It seems to me that even EPROMs have limits with the use of the board language card.I have your same problem and I'm waiting for news from DeanClaxton :)
PS: which eprom programmer do you use?
Uhm... maybe I am calling them with the wrong name but those are programmable ROM chips - the ones you wipe with UV light.
Timelord
Nothing seems to be wrong, just wondering if this is just XPS giving a false warning or whether my ROMs need some TLC.
To clarify, I did not program them myself, I found them in the machine. But if needed, I can program them myself with my programmer (TL866II plus, BIT. Those chips are 12.75V so I could do that but I'd need an UV lamp to wipe them first)
Ciao Tony,
all clear! :)I thought you wanted to program EPROMs with a "multipippo" :)EEPROMs cancel electrically.Can you read me the code of your EPROMs?I thought I understood that using EPROM instead of ROMs, you cannot read all 64KB using the board language card.Maybe putting an additional signal adapter socket could work.To clear the EPROM, you could use a mosquito net lamp; are there mosquitoes in England? : D5min, check another 5min, check, etc until it is all "1". :)
Not sure I'm following you, Bit.
But no, we do not have mosquitoes in England! :)
See the update posted in SMD ROM Replacement for Apple ][, ][ plus, ][ europlus.
BTW: which one is C0 and which one is E0? (those are supposed to be zero's...)
Not sure what they're referring to here. The original Apple's did have a E0 ROM, but never a C0 one. That space is reserved for peripheral cards and softswitches, etc.
Later II's used larger ROMs labelled CD and EF (again, a bit of a misnomer with the "C" ). And eventually the entire D000-FFFF space was placed into a single ROM. Apple //c's did have a single ROM that included the Cxxx space for the built-in peripherals.
Thank you
then I'm starting to think that maybe XPS is just expecting a different HW configuration and that causes the error I'm seeing.
You are right. After making some tests in Applewin, XPS does not recognize the enhanced ROMs. You can use Master Diagnostic IIe v7 which is able to test both enhanced and non enhanced Apple //e.
I just got the Enhancement kit from ReActiveMicro and XPS now results in exactly the same message.
I actually emailed Henry there and asked him about it, and now I am sort of embarrassed. I should have spent longer researching it on my own!
That is great to know, thanks for sharing! :)