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Added Nick's update to support NSC (GEOS driver).

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Updated NSC docs with Nick's latest versions.
This commit is contained in:
tomch 2010-09-06 20:15:05 +00:00
parent 9ccec9dc7e
commit d6eac54ab2
4 changed files with 22 additions and 11 deletions
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4
AppleWin/docs/NoSlotClock/DallasSmartWatchUtilityDisassembly.txt
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@ -1,7 +1,9 @@
Dallas SmartWatch DS1216 (No-Slot-Clock) SmartWatch Utility (Version 1.1).
Dallas SmartWatch DS1216 (No-Slot-Clock) SmartWatch Utility (Version 1.1) "SWU.SYSTEM".
Copyright 1987 Matthew Lee Stier.
Partial disassembly and comments by Nick Westgate (and CiderPress).
Note: This code requires the clock to be in the internal C3 ROM space. (CD or CF ROM sockets.)
2000- A2 FF LDX #$FF ;reset stack
2002- 9A TXS
2003- 20 58 22 JSR $2258

4
AppleWin/docs/NoSlotClock/GeosNoSlotClockDriverDisassembly.txt
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@ -1,7 +1,7 @@
Dallas SmartWatch DS1216 (No-Slot-Clock) GEOS driver.
No-Slot-Clock (Dallas SmartWatch DS1216) GEOS driver "NoSlot Clock".
Partial disassembly and comments by Nick Westgate (and CiderPress).
Note: This code requires the clock to be in the internal C8 ROM space.
Note: This code requires the clock to be in the internal C8 ROM space. (CD or CF ROM sockets.)
0800- 4C 15 08 JMP $0815 ;read time
0803- 4C B8 08 JMP $08B8

11
AppleWin/docs/NoSlotClock/NoSlotClockDriverDisassembly.txt
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@ -1,7 +1,9 @@
No-Slot-Clock (Dallas SmartWatch DS1216) ProDOS Driver.
No-Slot-Clock (Dallas SmartWatch DS1216) ProDOS Driver "NS.CLOCK.SYSTEM".
Probably written by Craig Peterson in 1990.
Partial disassembly and comments by Nick Westgate (and CiderPress).
Note: This code checks for the clock in internal C3, C8 and external slot ROM spaces. (CD, CF or slot ROM sockets.)
2000- 38 SEC ;actually loads at $2000
2001- B0 03 BCS $2006
2003- 09 23
@ -90,7 +92,7 @@ Partial disassembly and comments by Nick Westgate (and CiderPress).
10CF- 8C F8 13 STY $13F8
10D2- 8D 66 14 STA $1466 ;(STA $CFFF)
10D5- 8C 65 14 STY $1465
10D8- A9 00 LDA #$00 ;slot (3, 1..7)
10D8- A9 00 LDA #$00 ;slot (3, 1..7, C8 internal)
10DA- 8D 9C 11 STA $119C ;count?
10DD- A9 03 LDA #$03
10DF- 09 C0 ORA #$C0
@ -130,8 +132,7 @@ Partial disassembly and comments by Nick Westgate (and CiderPress).
112B- AD 9C 11 LDA $119C
112E- C9 08 CMP #$08
1130- 90 AD BCC $10DF
1132- D0 1D BNE $1151 ;stop after slots 3, 1..7
1132- D0 1D BNE $1151 ;loop for slots 3, 1..7
1134- A9 C0 LDA #$C0 ;prepare to check internal C8 ROM (where is this called from?)
1136- A0 15 LDY #$15
1138- 8D F9 13 STA $13F9
@ -143,7 +144,7 @@ Partial disassembly and comments by Nick Westgate (and CiderPress).
1147- 8D 66 14 STA $1466 ;(STA $C006)
114A- 8C 65 14 STY $1465
114D- A9 C8 LDA #$C8
114F- D0 93 BNE $10E4 ;set up addresses for internal C8 ROM
114F- D0 93 BNE $10E4 ;set up addresses for internal C8 ROM and test
1151- A0 03 LDY #$03 ;SmartWatch not found
1153- B9 97 11 LDA $1197,Y ;restore ProDOS date/time

14
AppleWin/source/Memory.cpp
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@ -390,7 +390,7 @@ static BYTE __stdcall IOWrite_C07x(WORD pc, WORD addr, BYTE bWrite, BYTE d, ULON
case 0xB: return IO_Null(pc, addr, bWrite, d, nCyclesLeft);
case 0xC: return IO_Null(pc, addr, bWrite, d, nCyclesLeft);
// case 0xD: return IO_Null(pc, addr, bWrite, d, nCyclesLeft);
case 0xD: // No Slot Clock Hack for ProDOS
case 0xD: // Clock Hack for ProDOS (NB. Not for NoSlotClock)
#if CLOCK_HACK_PRODOS
Clock_Generic_UpdateProDos();
#endif
@ -469,6 +469,14 @@ BYTE __stdcall IO_Annunciator(WORD programcounter, WORD address, BYTE write, BYT
return 0;
}
inline bool IsPotentialNoSlotClockAccess(const WORD address)
{
// Ref: Sather UAIIe 5-28
const BYTE AddrHi = address >> 8;
return ( ((!SW_SLOTCXROM || !SW_SLOTC3ROM) && (AddrHi == 0xC3)) || // Internal ROM at [$C100-CFFF or $C300-C3FF] && AddrHi == $C3
(!SW_SLOTCXROM && (AddrHi == 0xC8)) ); // Internal ROM at [$C100-CFFF] && AddrHi == $C8
}
// Enabling expansion ROM ($C800..$CFFF]:
// . Enable if: Enable1 && Enable2
// . Enable1 = I/O SELECT' (6502 accesses $Csxx)
@ -551,7 +559,7 @@ BYTE __stdcall IORead_Cxxx(WORD programcounter, WORD address, BYTE write, BYTE v
}
}
if ((address >= 0xC300) && (address <= 0xC3FF))
if (IsPotentialNoSlotClockAccess(address))
{
int data = 0;
if (g_NoSlotClock.Read(address, data))
@ -585,7 +593,7 @@ BYTE __stdcall IORead_Cxxx(WORD programcounter, WORD address, BYTE write, BYTE v
BYTE __stdcall IOWrite_Cxxx(WORD programcounter, WORD address, BYTE write, BYTE value, ULONG nCyclesLeft)
{
if ((address >= 0xC300) && (address <= 0xC3FF))
if (IsPotentialNoSlotClockAccess(address))
{
g_NoSlotClock.Write(address);
}