trs80m1: report presence of hr1g globally

We need this unfortunate visibility because if you have an HR1G you can't have
an Alpha joystick (polling the joystick turns off the graphics card!)

diff --git a/Kernel/platform-trs80m1/devgfx.c b/Kernel/platform-trs80m1/devgfx.c
index d7feb4d..047ebcb 100644 (file)
--- a/Kernel/platform-trs80m1/devgfx.c
+++ b/Kernel/platform-trs80m1/devgfx.c
@@ -17,6 +17,7 @@ __sfr __at 0x82 gfx_data;
 __sfr __at 0x83 gfx_ctrl;
 __sfr __at 0xFF ioctrl;
 
+uint8_t has_hr1g;
 static uint8_t max_mode = 0;
 
 static struct display trsdisplay[4] = {
@@ -162,6 +163,7 @@ void gfx_init(void)
     if (hrg_data != 0xFF) {    /* We ought to test more carefully */
       max_mode = 1;
       displaymap[1] = 3;
+      has_hr1g = 1;
     }
   } else if (trs80_model == TRS80_MODEL3) {
     /* The model 3 might have an 80-Grafix UDG card, or a Graphyx

diff --git a/Kernel/platform-trs80m1/devgfx.h b/Kernel/platform-trs80m1/devgfx.h
index db1ac10..ba30f99 100644 (file)
--- a/Kernel/platform-trs80m1/devgfx.h
+++ b/Kernel/platform-trs80m1/devgfx.h
@@ -6,4 +6,6 @@
 extern int gfx_ioctl(uint8_t minor, uarg_t arg, char *ptr);
 extern void gfx_init(void);
 
+extern uint8_t has_hr1g;
+
 #endif