FFFF000000060001001277AA000000000060000000001001210000001-7EFF6EB60Â4800480242A0Á-1‚0Â3880Â2‚42A1D7FFFF0‚‚10‚‚2‚00010000003A00000001073140840‚‚2‚42A1D7731028E00041E242A2000020000073700000000731,Subject: Re: Pin-out wanted for Apple //e workstation card serial ports Newsgroups: comp.sys.apple2 From: dempson@actrix.gen.nz (David Empson) Date: Fri, 19 Feb 1999 03:21:05 +1300 Message-ID: <1dnge9s.mzea2r1dsvhdsN@dempson.actrix.gen.nz> References: Organization: Empsoft X-Newsreader: MacSOUP 2.3 NNTP-Posting-Host: 202.49.157.176 X-Trace: 19 Feb 1999 03:20:45 +1300, 202.49.157.176 Lines: 43 Path: lobby!newstf02.news.aol.com!portc01.blue.aol.com!news-peer.gip.net!news-stock.gip.net!news.gsl.net!gip.net!news.iprolink.co.nz!news.actrix.gen.nz!dempson David Wilson wrote: > If anyone can give me the pin-outs for the two serial cables (I assume they > are both the same) for an Apple //e workstation card I would be grateful. The same as the IIgs serial port: 8 7 6 5 4 3 2 1 1 Handshake Out 2 Handshake In 3 TxD- 4 Signal ground 5 TxD+ 6 RxD- 7 Unused 8 RxD+ For LocalTalk, the RxD+/- and TxD+/- pins are used, together with signal ground. The drop box mixes the Tx and Rx signals together via a transformer. Transmit enable is controlled internally - the TxD+ and TxD- signals are set to high impedance (or possibly just grounded) while not transmitting, or are at +/-5V (ish) when transmit is enabled. For a serial printer, HShkOut and HShkIn are used for flow control, and TxD- and RxD- are used for data. TxD+ should not be connected, and RxD+ should be connected to ground. (An ImageWriter II is also RS-422, so it can have the positive and negative data signals hooked up.) > I intend patching the EPROM to at a minimum add support for the ProDOS > hidden bit. Good luck! At least the card's CPU is a 65(C)02, which makes the disassembly more straightforward. -- David Empson dempson@actrix.gen.nz Snail mail: P.O. Box 27-103, Wellington, New Zealand 00040000001000000003072C1733100050000000A000000020733000060000005C000000020ÁC310‚‚ÁFFFF0‚C00000 20ÂÁ ‚‚ÁA20‚‚ÁFFFF0‚900000 10ÂÁ ‚‚Á000700000018000000010‚20Â180‚Á0008000000970000000140,Geneva40,4030 10000900000015000000022‚A21D72‚A21D7000A00000021000000022‚7FFFFFFF1D72‚7FFFFFFF1D7000B00000005000000020Â000C0000000E000000017310‚‚1000F000000280000000050 128173440‚ÂÁÂÁ‚‚ÁÂ00130000005E00000000DA91F8CE1C1D1E1F7F1B024,-.¦¹°­­.FFFF0FFFF0