> On 2017-04-23, at 00:54, Segher Boessenkool <firstname.lastname@example.org> wrote: > >>> The MOS 6522 datasheet can be downloaded from here: >>> http://6502.org/documents/datasheets/mos/ >>> >>> The port drivers are on page 3 of the PDF. The Rockwell and Synertek 6522 datasheets are also on 6502.org. >> >> Got those, thanks. > > The datasheet shows a depletion-mode FET (with source tied to gate) for > the pull-up / keeper. The schematic agrees, and so does the chip. The > schematic shows a depletion-mode FET for the high-side driver as well, > and that is what is on the chip; the datasheet shows an enhancement FET > instead though. You mean the MOS datasheet / schematic / chip, right? -- SD! - http://e4aws.silverdr.com/ Message was sent through the cbm-hackers mailing listReceived on 2017-04-24 21:00:04
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