Enabled high res DIP switch

Kernel now sets display resolution based on the DIP switches.

docs/.~lock.FoenixMCP Manual.odt#

@@ -1 +0,0 @@
-,RYOKO/pjw,Ryoko,02.05.2022 19:18,file:///C:/Users/pjw/AppData/Roaming/LibreOffice/4;

src/boot.c

@@ -321,6 +321,8 @@ short boot_screen() {
     }
 
     txt_init_screen(screen);
+    txt_set_resolution(0, 0, 0);    // Set the resolution based on the DIP switch
+    txt_set_resolution(1, 0, 0);    // Set the resolution based on the DIP switch
     print(screen, buffer);
 
 #if MODEL == MODEL_FOENIX_A2560K

src/dev/txt_a2560k_a.c

@@ -9,6 +9,7 @@
 #include "log.h"
 #include "utilities.h"
 #include "A2560K/vky_chan_a.h"
+#include "A2560K/vky_chan_b.h"
 #include "dev/txt_screen.h"
 #include "dev/txt_a2560k_a.h"
 
@@ -153,6 +154,26 @@ short txt_a2560k_a_set_mode(short mode) {
  * @return 0 on success, any other number means the resolution is unsupported
  */
 short txt_a2560k_a_set_resolution(short width, short height) {
+
+    // If no size specified, set it based on the DIP switch
+    if ((width == 0) || (height == 0)) {
+        if ((*VKY3_B_MCR & VKY3_B_HIRES) == 0) {
+            width = 1024;
+            height = 768;
+        } else {
+            width = 800;
+            height = 600;
+        }
+    }
+
+    // Kick the PLL
+    // If VICKY is generating a 40MHz signal, we need to switch the bit to go to 40MHz before
+    // clearing it to go back to 25MHz.
+    if (*VKY3_A_MCR & VKY3_A_CLK40) {
+        *VKY3_A_MCR |= VKY3_A_1024x768;
+        *VKY3_A_MCR &= ~(VKY3_A_1024x768);
+    }
+
     /* Turn off resolution bits */
     msr_shadow &= ~(VKY3_A_1024x768);
 
@@ -524,6 +545,14 @@ void txt_a2560k_a_init() {
     t_rect region;
     int i;
 
+    // Kick the PLL
+    // If VICKY is generating a 40MHz signal, we need to switch the bit to go to 40MHz before
+    // clearing it to go back to 25MHz.
+    if (*VKY3_A_MCR & VKY3_A_CLK40) {
+        *VKY3_A_MCR |= VKY3_A_1024x768;
+        *VKY3_A_MCR &= ~(VKY3_A_1024x768);
+    }
+
     a2560k_a_resolution.width = 0;
     a2560k_a_resolution.height = 0;
     a2560k_a_font_size.width = 0;

src/dev/txt_a2560k_b.c

@@ -7,6 +7,7 @@
 #include <stdio.h>
 #include "log.h"
 #include "utilities.h"
+#include "A2560K/vky_chan_a.h"
 #include "A2560K/vky_chan_b.h"
 #include "dev/txt_screen.h"
 #include "dev/txt_a2560k_b.h"
@@ -166,6 +167,25 @@ short txt_a2560k_b_set_mode(short mode) {
 short txt_a2560k_b_set_resolution(short width, short height) {
     int i;
 
+    // If no size specified, set it based on the DIP switch
+    if ((width == 0) || (height == 0)) {
+        if ((*VKY3_B_MCR & VKY3_B_HIRES) == 0) {
+            width = 800;
+            height = 600;
+        } else {
+            width = 640;
+            height = 480;
+        }
+    }
+
+    // Kick the PLL
+    // If VICKY is generating a 40MHz signal, we need to switch the bit to go to 40MHz before
+    // clearing it to go back to 25MHz.
+    if (*VKY3_B_MCR & VKY3_B_CLK40) {
+        *VKY3_B_MCR |= VKY3_B_PLL | VKY3_B_MODE1;
+        *VKY3_B_MCR &= ~(VKY3_B_PLL | VKY3_B_MODE1);
+    }
+
     for (i = 0; i < a2560k_b_caps.resolution_count; i++) {
         if ((a2560k_b_caps.resolutions[i].width == width) && (a2560k_b_caps.resolutions[i].height == height)) {
             msr_shadow_b &= ~(VKY3_B_DOUBLE | VKY3_B_MODE0 | VKY3_B_MODE1);
@@ -180,14 +200,14 @@ short txt_a2560k_b_set_resolution(short width, short height) {
             // Use the height to determine the resolution we should set
             switch (height) {
                 case 400:   // 640x400 or 320x200 (mode = 11)
-                    msr_shadow_b |= VKY3_B_MODE0 | VKY3_B_MODE1;
+                    msr_shadow_b |= VKY3_B_MODE0;
                     break;
 
                 case 480:   // 640x480 or 320x240 (mode = 00)
                     break;
 
-                case 800:   // 800x600 or 400x300 (mode = 01)
+                case 600:   // 800x600 or 400x300 (mode = 01)
-                    msr_shadow_b |= VKY3_B_MODE0;
+                    msr_shadow_b |= VKY3_B_PLL | VKY3_B_MODE1;
                     break;
 
                 default:
@@ -202,6 +222,13 @@ short txt_a2560k_b_set_resolution(short width, short height) {
             // Recalculate the size of the screen
             txt_a2560k_b_set_sizes();
 
+            // Kick the PLL
+            if (*VKY3_B_MCR & VKY3_B_PLL) {
+                *VKY3_B_MCR &= ~(VKY3_B_PLL | VKY3_B_MODE0 | VKY3_B_MODE1);
+                *VKY3_B_MCR |= (VKY3_B_PLL | VKY3_B_MODE1);
+            }
+            *VKY3_B_MCR &= ~(VKY3_B_PLL | VKY3_B_MODE0 | VKY3_B_MODE1);
+
             // Update the register
             *VKY3_B_MCR = msr_shadow_b;
             return 0;
@@ -546,6 +573,14 @@ void txt_a2560k_b_init() {
     t_rect region;
     int i;
 
+    // Kick the PLL
+    // If VICKY is generating a 40MHz signal, we need to switch the bit to go to 40MHz before
+    // clearing it to go back to 25MHz.
+    if (*VKY3_B_MCR & VKY3_B_CLK40) {
+        *VKY3_B_MCR |= VKY3_B_PLL | VKY3_B_MODE1;
+        *VKY3_B_MCR &= ~(VKY3_B_PLL | VKY3_B_MODE1);
+    }
+
     a2560k_b_resolution.width = 0;
     a2560k_b_resolution.height = 0;
     a2560k_b_font_size.width = 0;

src/include/A2560K/vky_chan_a.h

@@ -12,6 +12,8 @@
 #define VKY3_A_MCR_TEXT     0x00000001  /**< Text mode enable bit */
 #define VKY3_A_MCR_SLEEP    0x00040000  /**< Monitor sleep (synch disable) bit */
 #define VKY3_A_1024x768     0x00000800  /**< Bit to select 1024x768 screen resolution */
+#define VKY3_A_HIRES        0x40000000  /**< Bit to indicate on read if hi-res display is requested on the DIP switches */
+#define VKY3_A_CLK40        0x80000000  /**< Indicate if PLL is 25MHz (0) or 40MHz (1) */
 
 /** Border control register for Channel A */
 #define VKY3_A_BCR          ((volatile unsigned long *)0xFEC40004)

src/include/A2560K/vky_chan_b.h

@@ -19,7 +19,10 @@
 #define VKY3_B_MODE0        0x00000100  /**< Video Mode Bit 0 */
 #define VKY3_B_MODE1        0x00000200  /**< Video Mode Bit 1 */
 #define VKY3_B_DOUBLE       0x00000400  /**< Pixel Double Enable bit */
+#define VKY3_B_HIRES        0x40000000  /**< DIP switch for hires mode */
+#define VKY3_B_PLL          0x00000800  /**< Controls dot clock */
 #define VKY3_B_MCR_SLEEP    0x00040000  /**< Monitor sleep (synch disable) bit */
+#define VKY3_B_CLK40        0x80000000  /**< Indicate if PLL is 25MHz (0) or 40MHz (1) */
 
 /** Border control register for Channel B */
 #define VKY3_B_BCR          ((volatile unsigned long *)0xFEC80004)

src/version.h

@@ -7,6 +7,6 @@
 
 #define VER_MAJOR 0
 #define VER_MINOR 53
-#define VER_BUILD 2
+#define VER_BUILD 4
 
 #endif