svp compiler: working asm dispatcher

[picodrive.git] / Pico / carthw / svp / ssp16.h

diff --git a/Pico/carthw/svp/ssp16.h b/Pico/carthw/svp/ssp16.h
index ef222df..fddb5ed 100644 (file)
--- a/Pico/carthw/svp/ssp16.h
+++ b/Pico/carthw/svp/ssp16.h
@@ -1,3 +1,10 @@
+// basic, incomplete SSP160x (SSP1601?) interpreter
+
+// (c) Copyright 2008, Grazvydas "notaz" Ignotas
+// Free for non-commercial use.
+
+// For commercial use, separate licencing terms must be obtained.
+
 
 // register names
 enum {
@@ -19,28 +26,42 @@ typedef union
 typedef struct
 {
        union {
-               unsigned short RAM[256*2];      // 2 internal RAM banks
+               unsigned short RAM[256*2];      // 000 2 internal RAM banks
                struct {
                        unsigned short RAM0[256];
                        unsigned short RAM1[256];
                };
        };
-       ssp_reg_t gr[16];       // general registers
+       ssp_reg_t gr[16];                       // 400 general registers
        union {
-               unsigned char r[8];     // BANK pointers
+               unsigned char r[8];             // 440 BANK pointers
                struct {
                        unsigned char r0[4];
                        unsigned char r1[4];
                };
        };
-       unsigned short stack[6];
-       unsigned int pmac_read[6];      // read modes/addrs for PM0-PM5
-       unsigned int pmac_write[6];     // write ...
+       unsigned short stack[6];                // 448
+       unsigned int pmac_read[6];              // 454 read modes/addrs for PM0-PM5
+       unsigned int pmac_write[6];             // 46c write ...
        //
-       #define SSP_PMC_HAVE_ADDR 1     // address written to PMAC, waiting for mode
-       #define SSP_PMC_SET 2           // PMAC is set
-       unsigned int emu_status;
-       unsigned int pad[30];
+       #define SSP_PMC_HAVE_ADDR       0x0001  // address written to PMAC, waiting for mode
+       #define SSP_PMC_SET             0x0002  // PMAC is set
+       #define SSP_WAIT_PM0            0x2000  // bit1 in PM0
+       #define SSP_WAIT_30FE06         0x4000  // ssp tight loops on 30FE06 to become non-zero
+       #define SSP_WAIT_30FE08         0x8000  // same for 30FE06
+       #define SSP_WAIT_MASK           0xe000
+       unsigned int emu_status;                // 484
+       /* used by recompiler only: */
+       struct {
+               unsigned int ptr_rom;           // 488
+               unsigned int ptr_iram_rom;      // 48c
+               unsigned int ptr_dram;          // 490
+               unsigned int iram_dirty;        // 494
+               unsigned int iram_context;      // 498
+               unsigned int ptr_btable;        // 49c
+               unsigned int ptr_btable_iram;   // 4a0
+               unsigned int tmp0;              // 4a4
+       } drc;
 } ssp1601_t;