pixelmischief Posted February 25, 2015 Share Posted February 25, 2015 I have TOS 4.01 in my Falcon. I want to upgrade it to TOS 4.04. I have a Willem programmer with a PLCC32 adapter. Is the component at the link below what I need? http://www.ebay.com/itm/HITACHI-HN27C4096CC-12-PLCC-EPROM-27C4096CC-Collectible-/370298462799?pt=LH_DefaultDomain_0&hash=item563782224f Quote Link to comment Share on other sites More sharing options...
frank.lukas Posted February 25, 2015 Share Posted February 25, 2015 If the Eprom is 16bit wide, look at the datasheet ... Quote Link to comment Share on other sites More sharing options...
TheNameOfTheGame Posted February 25, 2015 Share Posted February 25, 2015 I have TOS 4.01 in my Falcon. I want to upgrade it to TOS 4.04. I have a Willem programmer with a PLCC32 adapter. Is the component at the link below what I need? http://www.ebay.com/itm/HITACHI-HN27C4096CC-12-PLCC-EPROM-27C4096CC-Collectible-/370298462799?pt=LH_DefaultDomain_0&hash=item563782224f The chip in the falcon is 44PLCC not 32 so check to make sure you have to have the right adapter. Second, that chip is 120ns (-12) so it should be good. My falcon has a 150ns (-15) chip in it and I think it is the original. Also, check to make sure those are blanked or you may need a UV eraser. Quote Link to comment Share on other sites More sharing options...
pixelmischief Posted February 25, 2015 Author Share Posted February 25, 2015 The chip in the falcon is 44PLCC not 32 so check to make sure you have to have the right adapter.Thanks, will do! Also, check to make sure those are blanked or you may need a UV eraser.Yeah, I have a UV eraser. Got it way back when I needed to burn 27C64's for my XF-551 3.5" upgrade. Thanks Mr. Woolley. Quote Link to comment Share on other sites More sharing options...
Fletch Posted February 25, 2015 Share Posted February 25, 2015 Sounds like you're making your own, but if for some reason you need to purchase one, it looks like B&C has it for sale. ICSFAL TOS 4.04 FOR Falcon 45.00 Quote Link to comment Share on other sites More sharing options...
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