Updated some notes and cosmetic clean-up.

src/mame/drivers/jokrwild.c

@@ -2,20 +2,12 @@
 // copyright-holders:Roberto Fresca
 /******************************************************************************
 
-    JOKER'S WILD - SIGMA
+  JOKER'S WILD - SIGMA (1988)
-    --------------------
-
   Preliminary driver by Roberto Fresca.
 
 
-    Games running on this hardware:
-
-    * Joker's Wild (encrypted).   1988, Sigma.
-
-
 *******************************************************************************
 
-
   Hardware Notes (guessed):
   ------------------------
 
@@ -23,19 +15,17 @@
   Video:  1x M6845 CRTC or similar.
   I/O:    2x PIAs ?? (there is code to initialize PIAs at $8033)
 
-
 *******************************************************************************
 
-
   *** Game Notes ***
 
+  RND old notes:
   Game is trying to boot, and after approx. 90 seconds an error message appear
   on screen: "Random number generator is defective", then stuck here.
-
   See code at $9859
 
-    PIAs are commented out just to see the R/W on error log.
+  Currently the game spit an error about bad RAM, and after approx 90 seconds
-
+  the playfield is drawn and then hang.
 
 *******************************************************************************
 
@@ -57,20 +47,14 @@
   ----------------------------------------------------------------------------------------------------------------------
   value:     0x20  0x18  0x1B  0x64  0x20  0x07  0x1A  0x1D  0x00  0x07  0x00  0x00  0x00  0x00  0x00  0x00  0x00  0x00.
 
-
 *******************************************************************************
 
-
   DRIVER UPDATES:
 
-
   [2008-10-30]
-
    - Fixed graphics to 2 bits per pixel.
 
-
   [2008-10-25]
-
    - Initial release.
    - ROMs load OK.
    - Proper ROMs decryption.
@@ -78,7 +62,6 @@
    - Video RAM OK.
    - Added technical notes.
 
-
   TODO:
 
   - RND number generator.
@@ -86,10 +69,8 @@
   - Sound.
   - A lot of work.
 
-
 *******************************************************************************/
 
-
 #define MASTER_CLOCK    XTAL_8MHz   /* guess */
 
 #include "emu.h"
@@ -131,21 +112,18 @@ public:
 *     Video Hardware     *
 *************************/
 
-
 WRITE8_MEMBER(jokrwild_state::jokrwild_videoram_w)
 {
 	m_videoram[offset] = data;
 	m_bg_tilemap->mark_tile_dirty(offset);
 }
 
-
 WRITE8_MEMBER(jokrwild_state::jokrwild_colorram_w)
 {
 	m_colorram[offset] = data;
 	m_bg_tilemap->mark_tile_dirty(offset);
 }
 
-
 TILE_GET_INFO_MEMBER(jokrwild_state::get_bg_tile_info)
 {
 /*  - bits -
@@ -160,31 +138,23 @@ TILE_GET_INFO_MEMBER(jokrwild_state::get_bg_tile_info)
 	SET_TILE_INFO_MEMBER(0, code , color , 0);
 }
 
-
 void jokrwild_state::video_start()
 {
 	m_bg_tilemap = &machine().tilemap().create(m_gfxdecode, tilemap_get_info_delegate(FUNC(jokrwild_state::get_bg_tile_info),this), TILEMAP_SCAN_ROWS, 8, 8, 24, 26);
 }
 
-
 UINT32 jokrwild_state::screen_update_jokrwild(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
 {
 	m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0);
 	return 0;
 }
 
-
 PALETTE_INIT_MEMBER(jokrwild_state, jokrwild)
 {
 	//missing proms
 }
 
 
-/*************************
-*      Machine Init      *
-*************************/
-
-
 /*****************************
 *    Read/Write  Handlers    *
 *****************************/
@@ -200,6 +170,7 @@ READ8_MEMBER(jokrwild_state::rng_r)
 	return machine().rand() & 0xff;
 }
 
+
 /*************************
 * Memory Map Information *
 *************************/
@@ -220,7 +191,6 @@ static ADDRESS_MAP_START( jokrwild_map, AS_PROGRAM, 8, jokrwild_state )
 	AM_RANGE(0x8000, 0xffff) AM_ROM
 ADDRESS_MAP_END
 
-
 /* I/O byte R/W
 
 
@@ -238,6 +208,7 @@ ADDRESS_MAP_END
 
 */
 
+
 /*************************
 *      Input Ports       *
 *************************/
@@ -425,6 +396,7 @@ WRITE8_MEMBER(jokrwild_state::testb_w)
 //  printf("%02x B\n",data);
 }
 
+
 /*************************
 *    Machine Drivers     *
 *************************/
@@ -452,8 +424,8 @@ static MACHINE_CONFIG_START( jokrwild, jokrwild_state )
 	MCFG_SCREEN_ADD("screen", RASTER)
 	MCFG_SCREEN_REFRESH_RATE(60)
 	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
-	MCFG_SCREEN_SIZE((32+1)*8, (32+1)*8)                  /* From MC6845, registers 00 & 04. (value-1) */
+	MCFG_SCREEN_SIZE((32+1)*8, (32+1)*8)                  // From MC6845, registers 00 & 04. (value-1)
-	MCFG_SCREEN_VISIBLE_AREA(0*8, 24*8-1, 0*8, 26*8-1)    /* From MC6845, registers 01 & 06 */
+	MCFG_SCREEN_VISIBLE_AREA(0*8, 24*8-1, 0*8, 26*8-1)    // From MC6845, registers 01 & 06.
 	MCFG_SCREEN_UPDATE_DRIVER(jokrwild_state, screen_update_jokrwild)
 	MCFG_SCREEN_PALETTE("palette")
 
@@ -515,7 +487,6 @@ DRIVER_INIT_MEMBER(jokrwild_state,jokrwild)
 
   0x89 XOR 0xCC XOR 0x3A = 0x7F
 
-
 *****************************************************************************/
 {
 	int i, offs;
@@ -533,5 +504,5 @@ DRIVER_INIT_MEMBER(jokrwild_state,jokrwild)
 *      Game Drivers      *
 *************************/
 
-/*    YEAR  NAME      PARENT  MACHINE   INPUT     INIT      ROT    COMPANY  FULLNAME                   FLAGS */
+/*    YEAR  NAME      PARENT  MACHINE   INPUT     STATE           INIT      ROT    COMPANY  FULLNAME                   FLAGS */
 GAME( 1988, jokrwild, 0,      jokrwild, jokrwild, jokrwild_state, jokrwild, ROT0, "Sigma", "Joker's Wild (encrypted)", GAME_NO_SOUND | GAME_NOT_WORKING )