Tempest Posted February 20, 2022 Share Posted February 20, 2022 Can anyone point me to the instructions (and ROM file) for installing the 7800 Developers BIOS? Specifically I'm talking about the one that can be used to dump cartridges. Quote Link to comment Share on other sites More sharing options...
+Mitch Posted February 20, 2022 Share Posted February 20, 2022 The original page is long gone but here is a copy on the internet archive. https://web.archive.org/web/20161019151621/http://home.arcor.de/estolberg/tools/index.html Mitch Quote Link to comment Share on other sites More sharing options...
+-^CrossBow^- Posted February 21, 2022 Share Posted February 21, 2022 16 hours ago, Mitch said: The original page is long gone but here is a copy on the internet archive. https://web.archive.org/web/20161019151621/http://home.arcor.de/estolberg/tools/index.html Mitch I really should find someone to burn me a v2 of this as I still have v1.0 on my 7800 from when I added this to it back in like 2004 I think? Quote Link to comment Share on other sites More sharing options...
Tempest Posted February 21, 2022 Author Share Posted February 21, 2022 Thanks, I appreciate it. Quote Link to comment Share on other sites More sharing options...
+Mitch Posted February 22, 2022 Share Posted February 22, 2022 10 hours ago, -^CrossBow^- said: I really should find someone to burn me a v2 of this as I still have v1.0 on my 7800 from when I added this to it back in like 2004 I think? If you use the 7800 diag cart you may want John Harvey's 2.0b version. He modified some empty area in the BIOS to make the checksum match the standard BIOS. Mitch Quote Link to comment Share on other sites More sharing options...
+-^CrossBow^- Posted February 22, 2022 Share Posted February 22, 2022 12 hours ago, Mitch said: If you use the 7800 diag cart you may want John Harvey's 2.0b version. He modified some empty area in the BIOS to make the checksum match the standard BIOS. Mitch No the only cart I actually use is just @RevEng's utility cart as it does pretty much all I would need for checking most things. And I've never had the controller dongles for the diag cart anyway. 1 Quote Link to comment Share on other sites More sharing options...
Bratwurst Posted February 22, 2022 Share Posted February 22, 2022 This is quite cool. If anyone wants me to make them the interface cable (DB9 female to DB25 female) I have the materials. Quote Link to comment Share on other sites More sharing options...
SIO2 Posted March 19, 2022 Share Posted March 19, 2022 On 2/21/2022 at 6:10 PM, Mitch said: If you use the 7800 diag cart you may want John Harvey's 2.0b version. He modified some empty area in the BIOS to make the checksum match the standard BIOS. Mitch Where would I find that then? Quote Link to comment Share on other sites More sharing options...
+Mitch Posted March 19, 2022 Share Posted March 19, 2022 It may be online somewhere but I know I have a copy on my computer. I can check when I get home later. Mitch Quote Link to comment Share on other sites More sharing options...
+Mitch Posted March 20, 2022 Share Posted March 20, 2022 Here it is. Mitch devos02b.zip Quote Link to comment Share on other sites More sharing options...
SIO2 Posted March 21, 2022 Share Posted March 21, 2022 5 hours ago, Mitch said: Here it is. Mitch devos02b.zip 1.63 kB · 1 download Awesome! Thank you for that. I haven't had my console apart yet this month and now I have an excuse. :) Quote Link to comment Share on other sites More sharing options...
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