From 6babe07ea609882aa5ff726cf3ba47b5edd96d35 Mon Sep 17 00:00:00 2001
From: Ivan Izaguirre <ivanizag@gmail.com>
Date: Sun, 3 Mar 2019 23:54:43 +0100
Subject: [PATCH] Some work on the DiskII

---
 apple2/cardDisk2.go | 39 ++++++++++++++++++++++++++++++++++++---
 main.go             |  4 ++--
 2 files changed, 38 insertions(+), 5 deletions(-)

diff --git a/apple2/cardDisk2.go b/apple2/cardDisk2.go
index 7dd4e30..49f146d 100644
--- a/apple2/cardDisk2.go
+++ b/apple2/cardDisk2.go
@@ -14,9 +14,10 @@ http://yesterbits.com/media/pubs/AppleOrchard/articles/disk-ii-part-1-1983-apr.p
 
 type cardDisk2 struct {
 	cardBase
-	phases   [4]bool
-	power    [2]bool
-	selected int // Only 0 and 1 supported
+	phases    [4]bool
+	power     [2]bool
+	selected  int // Only 0 and 1 supported
+	writeMode bool
 }
 
 // type softSwitchR func(io *ioC0Page) uint8
@@ -59,6 +60,38 @@ func newCardDisk2(filename string) *cardDisk2 {
 		return 0
 	}
 
+	var i uint8
+	// Q6L
+	c.ssr[0xC] = func(_ *ioC0Page) uint8 {
+		fmt.Printf("DISKII: Reading\n")
+		i++
+		return i
+	}
+
+	c.ssw[0xC] = func(_ *ioC0Page, value uint8) {
+		fmt.Printf("DISKII: Writing the value 0x%02x\n", value)
+	}
+
+	// Q6H
+	c.ssr[0xD] = func(_ *ioC0Page) uint8 {
+		c.writeMode = false
+		fmt.Printf("DISKII: Sense write protection\n")
+		return 0
+	}
+
+	// Q7L
+	c.ssr[0xE] = func(_ *ioC0Page) uint8 {
+		c.writeMode = false
+		fmt.Printf("DISKII: Set read mode\n")
+		return 0
+	}
+
+	// Q7H
+	c.ssr[0xF] = func(_ *ioC0Page) uint8 {
+		c.writeMode = true
+		fmt.Printf("DISKII: Set write mode\n")
+		return 0
+	}
 	// TODO: missing C, D, E, and F
 
 	return &c
diff --git a/main.go b/main.go
index 5881963..eed5368 100644
--- a/main.go
+++ b/main.go
@@ -6,10 +6,10 @@ func main() {
 	//romFile := "apple2/romdumps/Apple2.rom"
 	romFile := "apple2/romdumps/Apple2_Plus.rom"
 	//romFile := "apple2/romdumps/Apple2e.rom"
-	disk2RomFile := "apple2/romdumps/DISK2.rom"
+	//disk2RomFile := "apple2/romdumps/DISK2.rom"
 
 	log := true
 	a := apple2.NewApple2(romFile)
-	a.AddDisk2(disk2RomFile)
+	//a.AddDisk2(disk2RomFile)
 	a.Run(log)
 }