From 69f95e462eac43cad6b10b44595fabd2516b75f6 Mon Sep 17 00:00:00 2001 From: "Curt J. Sampson" Date: Tue, 7 Dec 2021 18:14:08 +0900 Subject: [PATCH] SBC/README: Fix backwards description of the VP GND jumper Issue #29 from ea4eoz noted that this is backwards for the revision H board. It's clearly must be backwards for _every_ revision, since closing a jumper, rather than opening it, is the way to connect the other side of the jumper to ground. (This error was inserted by me when I originally wrote this section of the documentation.) --- RC6502 Apple 1 SBC/README.md | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/RC6502 Apple 1 SBC/README.md b/RC6502 Apple 1 SBC/README.md index 4892de8..7a50ced 100644 --- a/RC6502 Apple 1 SBC/README.md +++ b/RC6502 Apple 1 SBC/README.md @@ -88,11 +88,9 @@ box around the pins that enable. the expansion bus connector. - `VP GND` - - Shorted: WD65C02 CPU. Leaves pin 1 of the CPU (`V̅P̅` on the - WD65C02) floating. - - Open: Original MOS 6502, UM6502, SY6502, R65C02. Connects pin 1 of - the CPU to ground, providing an additional ground connection for - the CPU. + - Shorted: Original MOS 6502, UM6502, SY6502, R65C02. Connects pin 1 of the + CPU to ground, providing an additional ground connection for the CPU. + - Open: WD65C02 CPU. Leaves pin 1 of the CPU (`V̅P̅` on the WD65C02) floating. - `PIA_EN` - Top pair shorted: Enable PIA. Connects `CS1` to Vcc.