git.y1.nz

commit 7d8b5bdb058d3be47c218cdef3aa3a4f30d43aee
parent 610a2c6951045d37ec5789cac8d205143d220ab5
Author: Toxa <untoxa@mail.ru>
Date:   Thu, 25 Apr 2024 11:12:49 +0300

SMS/GG: add game gear ports definitions to hardware.h, also into the sms/global.s assembly definitions

Diffstat:
M
gbdk-lib/include/sms/hardware.h
40
++++++++++++++++++++++++++++++++++++++--
M
gbdk-lib/libc/targets/z80/sms/global.s
36
++++++++++++++++++++++++++++++++++++

2 files changed, 74 insertions(+), 2 deletions(-)
diff --git a/gbdk-lib/include/sms/hardware.h b/gbdk-lib/include/sms/hardware.h
@@ -10,6 +10,42 @@
 #define __BYTES extern UBYTE
 #define __BYTE_REG extern volatile UBYTE
 
+static volatile SFR AT(0x00) GG_STATE;
+
+#define GGSTATE_STT    0b10000000
+#define GGSTATE_NJAP   0b01000000
+#define GGSTATE_NNTS   0b00100000
+
+static volatile SFR AT(0x01) GG_EXT_7BIT;
+
+static volatile SFR AT(0x02) GG_EXT_CTL;
+
+#define GGEXT_NINIT    0b10000000
+
+static volatile SFR AT(0x03) GG_SIO_SEND;
+static volatile SFR AT(0x04) GG_SIO_RECV;
+static volatile SFR AT(0x05) GG_SIO_CTL;
+
+#define SIOCTL_TXFL    0b00000001
+#define SIOCTL_RXRD    0b00000010
+#define SIOCTL_FRER    0b00000100
+#define SIOCTL_INT     0b00001000
+#define SIOCTL_TON     0b00010000
+#define SIOCTL_RON     0b00100000
+#define SIOCTL_BS0     0b01000000
+#define SIOCTL_BS1     0b10000000
+
+static volatile SFR AT(0x06) GG_SOUND_PAN;
+
+#define SOUNDPAN_TN1R  0b00000001
+#define SOUNDPAN_TN2R  0b00000010
+#define SOUNDPAN_TN3R  0b00000100
+#define SOUNDPAN_NOSR  0b00001000
+#define SOUNDPAN_TN1L  0b00010000
+#define SOUNDPAN_TN2L  0b00100000
+#define SOUNDPAN_TN3L  0b01000000
+#define SOUNDPAN_NOSL  0b10000000
+
 static volatile SFR AT(0x3E) MEMORY_CTL;
 
 #define MEMCTL_JOYON   0b00000000
@@ -186,8 +222,8 @@ extern const UBYTE _SYSTEM;
 
 extern volatile UBYTE VDP_ATTR_SHIFT;
 
-#define VBK_TILES       0
-#define VBK_ATTRIBUTES  1
+#define VBK_TILES      0
+#define VBK_ATTRIBUTES 1
 
 #define VDP_SAT_TERM   0xD0
 
diff --git a/gbdk-lib/libc/targets/z80/sms/global.s b/gbdk-lib/libc/targets/z80/sms/global.s
@@ -1,3 +1,39 @@
+        .GG_STATE       = 0x00
+
+        .GGSTATE_STT    = 0b10000000
+        .GGSTATE_NJAP   = 0b01000000
+        .GGSTATE_NNTS   = 0b00100000
+
+        .GG_EXT_7BIT    = 0x01
+
+        .GG_EXT_CTL     = 0x02
+
+        .GGEXT_NINIT    = 0b10000000
+
+        .GG_SIO_SEND    = 0x03
+        .GG_SIO_RECV    = 0x04
+        .GG_SIO_CTL     = 0x05
+
+        .SIOCTL_TXFL    = 0b00000001
+        .SIOCTL_RXRD    = 0b00000010
+        .SIOCTL_FRER    = 0b00000100
+        .SIOCTL_INT     = 0b00001000
+        .SIOCTL_TON     = 0b00010000
+        .SIOCTL_RON     = 0b00100000
+        .SIOCTL_BS0     = 0b01000000
+        .SIOCTL_BS1     = 0b10000000
+
+        .GG_SOUND_PAN   = 0x06
+
+        .SOUNDPAN_TN1R  = 0b00000001
+        .SOUNDPAN_TN2R  = 0b00000010
+        .SOUNDPAN_TN3R  = 0b00000100
+        .SOUNDPAN_NOSR  = 0b00001000
+        .SOUNDPAN_TN1L  = 0b00010000
+        .SOUNDPAN_TN2L  = 0b00100000
+        .SOUNDPAN_TN3L  = 0b01000000
+        .SOUNDPAN_NOSL  = 0b10000000
+
         .MEMORY_CTL     = 0x3E
 
         .MEMCTL_JOYON   = 0b00000000

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