[hatari-devel] Avoid 5sec timeout for IDE device to become ready

[Thorsten Otto <admin@xxxxxxxxxxx>]

In TOS 4.x there is a 5sec timeout for a IDE drive to report a ready state. 
Since no command is send to the device in that loop, that status won't change. 
The attached patch just avoids that nasty timeout. I've also included the 
corresponding locations for TOS 2.x and TOS 3.x because that routine is also 
present there, although unlikely to be triggered unless Hatari reports the IDE 
device to be present for those Machines.

diff -r fac8ff2a2942 src/tos.c
--- a/src/tos.c	Sun Sep 16 09:26:30 2018 +0200
+++ b/src/tos.c	Tue Sep 18 20:19:57 2018 +0200
@@ -96,6 +96,7 @@
 static const char pszAtariLogo[] = "draw Atari Logo";
 static const char pszSTbook[] = "disable MCU access on ST-Book";
 static const char pszNoSparrowHw[] = "disable Sparrow hardware access";
+static const char pszIdeBoot[] = "boot from IDE";
 
 //static Uint8 pRtsOpcode[] = { 0x4E, 0x75 };  /* 0x4E75 = RTS */
 static const Uint8 pNopOpcodes[] = { 0x4E, 0x71, 0x4E, 0x71, 0x4E, 0x71, 0x4E, 0x71,
@@ -237,17 +238,20 @@
   { 0x206, -1, pszRomCheck, TP_ALWAYS, 0xE007FA, 0x2E3C0001, 4, pRomCheckOpcode206 },
   { 0x206, -1, pszDmaBoot, TP_HDIMAGE_OFF, 0xE00898, 0x610000E0, 4, pNopOpcodes }, /* BSR.W $E0097A */
   { 0x206, -1, pszAtariLogo, TP_VDIRES, 0xE0076C, 0x1038044c, sizeof( pAtariLogo ), pAtariLogo },
+  { 0x206, -1, pszIdeBoot, TP_ALWAYS, 0xE01A16, 0xB0B804BA, 6, pNopOpcodes },
 
   { 0x207, -1, pszNoSparrowHw, TP_ALWAYS, 0xE02D90, 0x08F80005, 6, pNopOpcodes },  /* BSET #5,$ffff8e0d.w */
   { 0x207, -1, pszRomCheck, TP_ALWAYS, 0xE007F8, 0x2E3C0001, 4, pRomCheckOpcode207 },
   { 0x207, -1, pszDmaBoot, TP_HDIMAGE_OFF, 0xE008DC, 0x610000E0, 4, pNopOpcodes }, /* BSR.W $E009BE */
   { 0x207, -1, pszAtariLogo, TP_VDIRES, 0xE0076A, 0x1038044c, sizeof(pAtariLogo), pAtariLogo },
+  { 0x207, -1, pszIdeBoot, TP_ALWAYS, 0xE01D7A, 0xB0B804BA, 6, pNopOpcodes },
 
   { 0x208, -1, pszDmaBoot, TP_HDIMAGE_OFF, 0xE00806, 0x610000E8, 4, pNopOpcodes }, /* BSR.W $E008F0 */
   { 0x208, -1, pszAtariLogo, TP_VDIRES, 0xE006B4, 0x1038044c, sizeof( pAtariLogo ), pAtariLogo },
   { 0x208, -1, pszSTbook, TP_ALWAYS, 0xE00066, 0x303900d0, 18, pNopOpcodes },
   { 0x208, -1, pszSTbook, TP_ALWAYS, 0xE000D6, 0x4a7900d0, 6, pNopOpcodes },
   { 0x208, -1, pszSTbook, TP_ALWAYS, 0xE009FE, 0x303900d0, 14, pNopOpcodes },
+  { 0x208, -1, pszIdeBoot, TP_ALWAYS, 0xE0195C, 0xB0B804BA, 6, pNopOpcodes },
 
   { 0x306, -1, pszRomCheck, TP_ALWAYS, 0xE007D4, 0x2E3C0001, 4, pRomCheckOpcode306 },
   { 0x306, -1, pszNoPmmu, TP_ANTI_PMMU, 0xE00068, 0xF0394000, 24, pNopOpcodes }, /* pmove : TC=0 TT0=0 TT1=0 -> disable MMU */
@@ -255,6 +259,7 @@
   { 0x306, -1, pszFix060, TP_FIX_060, 0xe024dc, 0x01C80000, 12, p060movep1 },
   { 0x306, -1, pszFix060, TP_FIX_060, 0xe024fa, 0x01C80000, 12, p060movep1 },
   { 0x306, -1, pszAtariLogo, TP_VDIRES, 0xE00754, 0x1038044c, sizeof( pAtariLogo ), pAtariLogo },
+  { 0x306, -1, pszIdeBoot, TP_ALWAYS, 0xE01EE2, 0xB0B804BA, 6, pNopOpcodes },
 
   { 0x400, -1, pszNoPmmu, TP_ANTI_PMMU, 0xE00064, 0xF0394000, 24, pNopOpcodes }, /* pmove : TC=0 TT0=0 TT1=0 -> disable MMU */
   { 0x400, -1, pszNoPmmu, TP_ANTI_PMMU, 0xE0148A, 0xF0394C00, 32, pNopOpcodes },
@@ -262,6 +267,7 @@
   { 0x400, -1, pszRomCheck, TP_ALWAYS, 0xE00686, 0x2E3C0007, 4, pRomCheckOpcode404 },
   { 0x400, -1, pszFix060, TP_FIX_060, 0xE0258A, 0x01C80000, 12, p060movep1 },
   { 0x400, -1, pszFix060, TP_FIX_060, 0xE025DA, 0x41F8FA01, 20, p060movep2 },
+  { 0x400, -1, pszIdeBoot, TP_ALWAYS, 0xE01EE8, 0xB0B804BA, 6, pNopOpcodes },
 
   { 0x401, -1, pszNoPmmu, TP_ANTI_PMMU, 0xE0006A, 0xF0394000, 24, pNopOpcodes }, /* pmove : TC=0 TT0=0 TT1=0 -> disable MMU */
   { 0x401, -1, pszNoPmmu, TP_ANTI_PMMU, 0xE014A8, 0xF0394C00, 32, pNopOpcodes },
@@ -269,6 +275,7 @@
   { 0x401, -1, pszRomCheck, TP_ALWAYS, 0xE006A6, 0x2E3C0007, 4, pRomCheckOpcode404 },
   { 0x401, -1, pszFix060, TP_FIX_060, 0xE02588, 0x01C80000, 12, p060movep1 },
   { 0x401, -1, pszFix060, TP_FIX_060, 0xE025D8, 0x41F8FA01, 20, p060movep2 },
+  { 0x401, -1, pszIdeBoot, TP_ALWAYS, 0xE01EE6, 0xB0B804BA, 6, pNopOpcodes },
 
   { 0x402, -1, pszNoPmmu, TP_ANTI_PMMU, 0xE0006A, 0xF0394000, 24, pNopOpcodes }, /* pmove : TC=0 TT0=0 TT1=0 -> disable MMU */
   { 0x402, -1, pszNoPmmu, TP_ANTI_PMMU, 0xE014A8, 0xF0394C00, 32, pNopOpcodes },
@@ -276,6 +283,7 @@
   { 0x402, -1, pszRomCheck, TP_ALWAYS, 0xE006A6, 0x2E3C0007, 4, pRomCheckOpcode404 },
   { 0x402, -1, pszFix060, TP_FIX_060, 0xE02588, 0x01C80000, 12, p060movep1 },
   { 0x402, -1, pszFix060, TP_FIX_060, 0xE025D8, 0x41F8FA01, 20, p060movep2 },
+  { 0x402, -1, pszIdeBoot, TP_ALWAYS, 0xE01EE6, 0xB0B804BA, 6, pNopOpcodes },
 
   { 0x404, -1, pszNoPmmu, TP_ANTI_PMMU, 0xE0006A, 0xF0394000, 24, pNopOpcodes }, /* pmove : TC=0 TT0=0 TT1=0 -> disable MMU */
   { 0x404, -1, pszNoPmmu, TP_ANTI_PMMU, 0xE014E6, 0xF0394C00, 32, pNopOpcodes }, /* pmove : CRP=80000002 00000700 TC=80f04445 TT0=017e8107 TT1=807e8507 -> */
@@ -289,6 +297,7 @@
   { 0x404, -1, pszFix060, TP_FIX_060, 0xE7F000, 0xFFFFFFFF, sizeof( p060movep3_2 ), p060movep3_2 },
   { 0x404, -1, pszFalconExtraRAM, TP_ALWAYS, 0xE0096E, 0x70036100, 6, pFalconExtraRAM_1 },
   { 0x404, -1, pszFalconExtraRAM, TP_ALWAYS, 0xE7F100, 0xFFFFFFFF, sizeof( pFalconExtraRAM_2 ), pFalconExtraRAM_2 },
+  { 0x404, -1, pszIdeBoot, TP_ALWAYS, 0xE01F24, 0xB0B804BA, 6, pNopOpcodes },
 
   { 0x492, -1, pszNoPmmu, TP_ANTI_PMMU, 0x00F946, 0xF0394000, 24, pNopOpcodes },
   { 0x492, -1, pszNoPmmu, TP_ANTI_PMMU, 0x01097A, 0xF0394C00, 32, pNopOpcodes },