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-rw-r--r--src/mess/machine/6883sam.c104
1 files changed, 52 insertions, 52 deletions
diff --git a/src/mess/machine/6883sam.c b/src/mess/machine/6883sam.c
index dac09e6ab27..ef882785bf3 100644
--- a/src/mess/machine/6883sam.c
+++ b/src/mess/machine/6883sam.c
@@ -54,7 +54,7 @@
// CONSTANTS
//**************************************************************************
-#define LOG_SAM 0
+#define LOG_SAM 0
const device_type SAM6883 = &device_creator<sam6883_device>;
@@ -70,15 +70,15 @@ const device_type SAM6883 = &device_creator<sam6883_device>;
sam6883_device::sam6883_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
: device_t(mconfig, SAM6883, "SAM6883", tag, owner, clock),
- m_space_0000(*this),
- m_space_8000(*this),
- m_space_A000(*this),
- m_space_C000(*this),
- m_space_FF00(*this),
- m_space_FF20(*this),
- m_space_FF40(*this),
- m_space_FF60(*this),
- m_space_FFE0(*this)
+ m_space_0000(*this),
+ m_space_8000(*this),
+ m_space_A000(*this),
+ m_space_C000(*this),
+ m_space_FF00(*this),
+ m_space_FF20(*this),
+ m_space_FF40(*this),
+ m_space_FF60(*this),
+ m_space_FFE0(*this)
{
memset(m_banks, '\0', sizeof(m_banks));
}
@@ -217,27 +217,27 @@ void sam6883_device::update_state(void)
void sam6883_device::update_memory(void)
{
// Memory size - allowed restricting memory accesses to something less than
- // 32k
- //
- // This was a SAM switch that occupied 4 addresses:
- //
- // $FFDD (set) R1
- // $FFDC (clear) R1
- // $FFDB (set) R0
- // $FFDA (clear) R0
- //
- // R1:R0 formed the following states:
- // 00 - 4k
- // 01 - 16k
- // 10 - 64k
- // 11 - static RAM (??)
- //
- // If something less than 64k was set, the low RAM would be smaller and
- // mirror the other parts of the RAM
- //
- // TODO: Find out what "static RAM" is
- // TODO: This should affect _all_ memory accesses, not just video ram
- // TODO: Verify that the CoCo 3 ignored this
+ // 32k
+ //
+ // This was a SAM switch that occupied 4 addresses:
+ //
+ // $FFDD (set) R1
+ // $FFDC (clear) R1
+ // $FFDB (set) R0
+ // $FFDA (clear) R0
+ //
+ // R1:R0 formed the following states:
+ // 00 - 4k
+ // 01 - 16k
+ // 10 - 64k
+ // 11 - static RAM (??)
+ //
+ // If something less than 64k was set, the low RAM would be smaller and
+ // mirror the other parts of the RAM
+ //
+ // TODO: Find out what "static RAM" is
+ // TODO: This should affect _all_ memory accesses, not just video ram
+ // TODO: Verify that the CoCo 3 ignored this
// for now, lets assume that the caller is nice and made m_memory_size
// a power of two
@@ -307,26 +307,26 @@ void sam6883_device::update_memory(void)
void sam6883_friend_device::update_cpu_clock(void)
{
// The infamous speed up poke.
- //
- // This was a SAM switch that occupied 4 addresses:
- //
- // $FFD9 (set) R1
- // $FFD8 (clear) R1
- // $FFD7 (set) R0
- // $FFD6 (clear) R0
- //
- // R1:R0 formed the following states:
- // 00 - slow 0.89 MHz
- // 01 - dual speed ???
- // 1x - fast 1.78 MHz
- //
- // R1 controlled whether the video addressing was speeded up and R0
- // did the same for the CPU. On pre-CoCo 3 machines, setting R1 caused
- // the screen to display garbage because the M6847 could not display
- // fast enough.
- //
- // TODO: Make the overclock more accurate. In dual speed, ROM was a fast
- // access but RAM was not. I don't know how to simulate this.
+ //
+ // This was a SAM switch that occupied 4 addresses:
+ //
+ // $FFD9 (set) R1
+ // $FFD8 (clear) R1
+ // $FFD7 (set) R0
+ // $FFD6 (clear) R0
+ //
+ // R1:R0 formed the following states:
+ // 00 - slow 0.89 MHz
+ // 01 - dual speed ???
+ // 1x - fast 1.78 MHz
+ //
+ // R1 controlled whether the video addressing was speeded up and R0
+ // did the same for the CPU. On pre-CoCo 3 machines, setting R1 caused
+ // the screen to display garbage because the M6847 could not display
+ // fast enough.
+ //
+ // TODO: Make the overclock more accurate. In dual speed, ROM was a fast
+ // access but RAM was not. I don't know how to simulate this.
int speed = (m_sam_state & (SAM_STATE_R1|SAM_STATE_R0)) / SAM_STATE_R0;
@@ -539,7 +539,7 @@ void sam6883_device::sam_space<_addrstart, _addrend>::point_specific_bank(const
else
{
// this bank uses handlers
- assert((offset == 0) && (mask == 0)); // changes to the offset are not supported
+ assert((offset == 0) && (mask == 0)); // changes to the offset are not supported
if (is_write)
{