Added basic frame for new target 'creativision'.

Kym Greenshields <kym.greenshields@gmail.com> has expressed interest
in contributing and maintaining support for the VTech CreatiVision system.

this resembles commit 8e6b8dd0afed52c1963ea29c4921157693463cbe from oliver

diff --git a/cfg/creativision.cfg b/cfg/creativision.cfg
new file mode 100644 (file)
index 0000000..9122ccd
--- /dev/null
+++ b/cfg/creativision.cfg
@@ -0,0 +1,35 @@
+SYMBOLS {
+    __STACKSIZE__: type = weak, value = $0180;
+}
+MEMORY {
+    ZP:  file = "", define = yes, start = $0020, size = $00E0;
+    RAM: file = "", define = yes, start = $01FA, size = $0206;
+    ROM: file = %O, define = yes, start = $B000, size = $1000;
+}
+SEGMENTS {
+    ZEROPAGE: load = ZP,             type = zp;
+    ZP:       load = ZP,             type = zp,                optional = yes;
+    VECTORS:  load = ROM, run = RAM, type = rw,  define = yes;
+    DATA:     load = ROM, run = RAM, type = rw,  define = yes,                 start = $0204;
+    BSS:      load = RAM,            type = bss, define = yes;
+    CODE:     load = ROM,            type = ro;
+    INIT:     load = ROM,            type = ro;
+    RODATA:   load = ROM,            type = ro;
+    AUDIO:    load = ROM,            type = ro,                optional = yes, start = $BF00;
+    SETUP:    load = ROM,            type = ro,                                start = $BFE8;
+}
+FEATURES {
+    CONDES: type    = constructor,
+            label   = __CONSTRUCTOR_TABLE__,
+            count   = __CONSTRUCTOR_COUNT__,
+            segment = INIT;
+    CONDES: type    = destructor,
+            label   = __DESTRUCTOR_TABLE__,
+            count   = __DESTRUCTOR_COUNT__,
+            segment = RODATA;
+    CONDES: type    = interruptor,
+            label   = __INTERRUPTOR_TABLE__,
+            count   = __INTERRUPTOR_COUNT__,
+            segment = RODATA,
+            import  = __CALLIRQ__;
+}

diff --git a/libsrc/Makefile b/libsrc/Makefile
index a4101aecd9eb3fba686b4f5078165081d72e25a2..364b266c809e11e1b3dda9b12116d61f3a5d6e00 100644 (file)
--- a/libsrc/Makefile
+++ b/libsrc/Makefile
@@ -20,6 +20,7 @@ TARGETS = apple2    \
           atarixl   \
           atari5200 \
           atmos     \
+          creativision \
           $(CBMS)   \
           $(GEOS)   \
           gamate    \

diff --git a/libsrc/creativision/crt0.s b/libsrc/creativision/crt0.s
new file mode 100644 (file)
index 0000000..ccae38e
--- /dev/null
+++ b/libsrc/creativision/crt0.s
@@ -0,0 +1,102 @@
+;
+; Startup code for cc65 (CreatiVision version)
+;
+
+        .export         _exit
+        .export         __STARTUP__ : absolute = 1      ; Mark as startup
+        .import         zerobss, copydata
+        .import         initlib, donelib, callmain
+        .import         __VECTORS_LOAD__, __VECTORS_RUN__, __VECTORS_SIZE__
+        .import         __ZP_LAST__, __STACKSIZE__, __RAM_START__
+
+        .include        "zeropage.inc"
+
+; ------------------------------------------------------------------------
+
+entry:
+        ; Init the CPU
+        sei
+        cld
+
+        ; Copy the IRQ vectors
+        ldx     #<__VECTORS_SIZE__ - 1
+:       lda     __VECTORS_LOAD__,x
+        sta     __VECTORS_RUN__,x
+        dex
+        bpl     :-
+
+        ; Setup the CPU stack ptr
+        ldx     #<__RAM_START__ - 1
+        txs
+
+        ; Start interrupts
+        cli
+
+        ; Clear the BSS data
+        jsr     zerobss
+
+        ; Copy data from ROM to RAM
+        jsr     copydata
+
+        ; Setup the argument stack ptr
+        lda     #<(__ZP_LAST__ + __STACKSIZE__)
+        ldx     #>(__ZP_LAST__ + __STACKSIZE__)
+        sta     sp
+        stx     sp+1
+
+        ; Call module constructors
+        jsr     initlib
+
+        ; Call main()
+        jsr     callmain
+
+        ; Call module destructors. This is also the _exit entry.
+_exit:  jsr     donelib
+
+        ; TODO: Replace with some sort of reset
+loop:   jmp loop
+
+; ------------------------------------------------------------------------
+; Define the IRQ vectors.
+
+.segment        "VECTORS"
+
+irq1:   jmp     $FF3F
+irq2:   jmp     $FF52
+
+; ------------------------------------------------------------------------
+; Define CART setup values for BIOS.
+
+.segment        "SETUP"
+
+        ; BIOS Jump Start
+        ; This is where the entry point of the program needs to be
+        .addr   entry
+        .addr   irq2
+
+        .res    4
+
+        ; VDP Setup
+        ; This sets to Graphics Mode 1
+        .byte   $00             ; Register 0
+        .byte   $C0             ; Register 1 16K RAM, Active Display, Mode 1
+        .byte   $04             ; Register 2 Name Table at $1000 - $12FF
+        .byte   $60             ; Register 3 Colour Table at $1800 - $181F
+        .byte   $00             ; Register 4 Pattern Table at $0000 - $07FF
+        .byte   $10             ; Register 5 Sprite Attribute at $0800 - $087F
+        .byte   $01             ; Register 6 Sprite Pattern
+        .byte   $F1             ; Register 7 Text colour Foreground / background
+
+        .res    4
+
+        ; BIOS Vector after NMI or RESET
+        ; Keeping with retail cartridges, we jump back to BIOS ROM and have it
+        ; setup zeropage etc, and show the Creativision logo and copyright.
+        .addr $F808
+
+        ; BIOS Short Interrupt Handler
+        ; Vectored from BIOS ROM:FE2C. This should contain a pointer to the user's
+        ; BIOS interrupt handler.
+        .addr irq1
+
+; ------------------------------------------------------------------------

diff --git a/src/ca65/main.c b/src/ca65/main.c
index 0016c46f3fe8b3eae76b205e9a9a431bb1189996..b25d5ad9f4ad5bcdd9f3a4909ac167941bd08665 100644 (file)
--- a/src/ca65/main.c
+++ b/src/ca65/main.c
@@ -251,10 +251,6 @@ static void SetSys (const char* Sys)
             CBMSystem ("__PET__");
             break;
 
-        case TGT_BBC:
-            NewSymbol ("__BBC__", 1);
-            break;
-
         case TGT_APPLE2:
             NewSymbol ("__APPLE2__", 1);
             break;
@@ -274,31 +270,41 @@ static void SetSys (const char* Sys)
             NewSymbol ("__GEOS_CBM__", 1);
             break;
 
+        case TGT_ATMOS:
+            NewSymbol ("__ATMOS__", 1);
+            break;
+
+        case TGT_BBC:
+            NewSymbol ("__BBC__", 1);
+            break;
+
+        case TGT_CREATIVISION:
+            NewSymbol ("__CREATIVISION__", 1);
+            break;
+
         case TGT_GEOS_APPLE:
             NewSymbol ("__GEOS__", 1);
             NewSymbol ("__GEOS_APPLE__", 1);
             break;
 
+        case TGT_GEOS_CBM:
+            /* Do not handle as a CBM system */
+            NewSymbol ("__GEOS__", 1);
+            NewSymbol ("__GEOS_CBM__", 1);
+            break;
+
         case TGT_LUNIX:
             NewSymbol ("__LUNIX__", 1);
             break;
 
-        case TGT_ATMOS:
-            NewSymbol ("__ATMOS__", 1);
+        case TGT_LYNX:
+            NewSymbol ("__LYNX__", 1);
             break;
 
         case TGT_NES:
             NewSymbol ("__NES__", 1);
             break;
 
-        case TGT_SUPERVISION:
-            NewSymbol ("__SUPERVISION__", 1);
-            break;
-
-        case TGT_LYNX:
-            NewSymbol ("__LYNX__", 1);
-            break;
-
         case TGT_SIM6502:
             NewSymbol ("__SIM6502__", 1);
             break;
@@ -315,6 +321,10 @@ static void SetSys (const char* Sys)
             NewSymbol ("__PCE__", 1);
             break;
 
+        case TGT_SUPERVISION:
+            NewSymbol ("__SUPERVISION__", 1);
+            break;
+
         default:
             AbEnd ("Invalid target name: `%s'", Sys);
 

diff --git a/src/cc65/main.c b/src/cc65/main.c
index abe2af56ed8359cfb274bd9ac961afdfc01b6100..c4a5c3788c88cd9ae8dbaf6d54e79f70e0d5ce76 100644 (file)
--- a/src/cc65/main.c
+++ b/src/cc65/main.c
@@ -207,10 +207,6 @@ static void SetSys (const char* Sys)
             cbmsys ("__PET__");
             break;
 
-        case TGT_BBC:
-            DefineNumericMacro ("__BBC__", 1);
-            break;
-
         case TGT_APPLE2:
             DefineNumericMacro ("__APPLE2__", 1);
             break;
@@ -230,31 +226,41 @@ static void SetSys (const char* Sys)
             DefineNumericMacro ("__GEOS_CBM__", 1);
             break;
 
+        case TGT_ATMOS:
+            DefineNumericMacro ("__ATMOS__", 1);
+            break;
+
+        case TGT_BBC:
+            DefineNumericMacro ("__BBC__", 1);
+            break;
+
+        case TGT_CREATIVISION:
+            DefineNumericMacro ("__CREATIVISION__", 1);
+            break;
+
         case TGT_GEOS_APPLE:
             DefineNumericMacro ("__GEOS__", 1);
             DefineNumericMacro ("__GEOS_APPLE__", 1);
             break;
 
+        case TGT_GEOS_CBM:
+            /* Do not handle as a CBM system */
+            DefineNumericMacro ("__GEOS__", 1);
+            DefineNumericMacro ("__GEOS_CBM__", 1);
+            break;
+
         case TGT_LUNIX:
             DefineNumericMacro ("__LUNIX__", 1);
             break;
 
-        case TGT_ATMOS:
-            DefineNumericMacro ("__ATMOS__", 1);
+        case TGT_LYNX:
+            DefineNumericMacro ("__LYNX__", 1);
             break;
 
         case TGT_NES:
             DefineNumericMacro ("__NES__", 1);
             break;
 
-        case TGT_SUPERVISION:
-            DefineNumericMacro ("__SUPERVISION__", 1);
-            break;
-
-        case TGT_LYNX:
-            DefineNumericMacro ("__LYNX__", 1);
-            break;
-
         case TGT_SIM6502:
             DefineNumericMacro ("__SIM6502__", 1);
             break;
@@ -271,6 +277,10 @@ static void SetSys (const char* Sys)
             DefineNumericMacro ("__PCE__", 1);
             break;
 
+        case TGT_SUPERVISION:
+            DefineNumericMacro ("__SUPERVISION__", 1);
+            break;
+
         default:
             AbEnd ("Unknown target system type %d", Target);
     }

diff --git a/src/common/target.c b/src/common/target.c
index e89010123f4cec03203675885b91c032df8e6506..cc5d412069c81cb672f09b3b98fab37715d91de4 100644 (file)
--- a/src/common/target.c
+++ b/src/common/target.c
@@ -134,7 +134,7 @@ static const unsigned char CTPET[256] = {
 /* One entry in the target map */
 typedef struct TargetEntry TargetEntry;
 struct TargetEntry {
-    char        Name[12];               /* Target name */
+    char        Name[13];               /* Target name */
     target_t    Id;                     /* Target id */
 };
 
@@ -154,6 +154,7 @@ static const TargetEntry TargetMap[] = {
     {   "c64",          TGT_C64         },
     {   "cbm510",       TGT_CBM510      },
     {   "cbm610",       TGT_CBM610      },
+    {   "creativision", TGT_CREATIVISION},
     {   "gamate",       TGT_GAMATE      },
     {   "geos",         TGT_GEOS_CBM    },
     {   "geos-apple",   TGT_GEOS_APPLE  },
@@ -192,20 +193,21 @@ static const TargetProperties PropertyTable[TGT_COUNT] = {
     { "cbm610",         CPU_6502,       BINFMT_BINARY,      CTPET   },
     { "osic1p",         CPU_6502,       BINFMT_BINARY,      CTOSI   },
     { "pet",            CPU_6502,       BINFMT_BINARY,      CTPET   },
-    { "bbc",            CPU_6502,       BINFMT_BINARY,      CTNone  },
     { "apple2",         CPU_6502,       BINFMT_BINARY,      CTNone  },
     { "apple2enh",      CPU_65C02,      BINFMT_BINARY,      CTNone  },
-    { "geos-cbm",       CPU_6502,       BINFMT_BINARY,      CTNone  },
+    { "atmos",          CPU_6502,       BINFMT_BINARY,      CTNone  },
+    { "bbc",            CPU_6502,       BINFMT_BINARY,      CTNone  },
+    { "creativision",   CPU_6502,       BINFMT_BINARY,      CTNone  },
     { "geos-apple",     CPU_65C02,      BINFMT_BINARY,      CTNone  },
+    { "geos-cbm",       CPU_6502,       BINFMT_BINARY,      CTNone  },
     { "lunix",          CPU_6502,       BINFMT_O65,         CTNone  },
-    { "atmos",          CPU_6502,       BINFMT_BINARY,      CTNone  },
-    { "nes",            CPU_6502,       BINFMT_BINARY,      CTNone  },
-    { "supervision",    CPU_65SC02,     BINFMT_BINARY,      CTNone  },
     { "lynx",           CPU_65C02,      BINFMT_BINARY,      CTNone  },
+    { "nes",            CPU_6502,       BINFMT_BINARY,      CTNone  },
     { "sim6502",        CPU_6502,       BINFMT_BINARY,      CTNone  },
     { "sim65c02",       CPU_65C02,      BINFMT_BINARY,      CTNone  },
     { "pce",            CPU_HUC6280,    BINFMT_BINARY,      CTNone  },
     { "gamate",         CPU_6502,       BINFMT_BINARY,      CTNone  },
+    { "supervision",    CPU_65SC02,     BINFMT_BINARY,      CTNone  },
 };
 
 /* Target system */

diff --git a/src/common/target.h b/src/common/target.h
index 6366b725f48bebda5bcf3b7fe8bc9c1ef16c7ce7..c266a4408f1c74b405896e0bfb1eea5d5e657b83 100644 (file)
--- a/src/common/target.h
+++ b/src/common/target.h
@@ -66,27 +66,28 @@ typedef enum {
     TGT_CBM610,
     TGT_OSIC1P,
     TGT_PET,
-    TGT_BBC,
     TGT_APPLE2,
     TGT_APPLE2ENH,
-    TGT_GEOS_CBM,
+    TGT_ATMOS,
+    TGT_BBC,
+    TGT_CREATIVISION,
     TGT_GEOS_APPLE,
+    TGT_GEOS_CBM,
     TGT_LUNIX,
-    TGT_ATMOS,
-    TGT_NES,
-    TGT_SUPERVISION,
     TGT_LYNX,
+    TGT_NES,
     TGT_SIM6502,
     TGT_SIM65C02,
     TGT_PCENGINE,
     TGT_GAMATE,
+    TGT_SUPERVISION,
     TGT_COUNT                   /* Number of target systems */
 } target_t;
 
 /* Collection of target properties */
 typedef struct TargetProperties TargetProperties;
 struct TargetProperties {
-    const char              Name[12];   /* Name of the target */
+    const char              Name[13];   /* Name of the target */
     cpu_t                   DefaultCPU; /* Default CPU for this target */
     unsigned char           BinFmt;     /* Default binary format for this target */
     const unsigned char*    CharMap;    /* Character translation table */