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bbc_sdcard: Added CB1 callback for CLK.

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This commit is contained in:
Nigel Barnes 2022-06-22 21:25:38 +01:00
parent 1ebcd7cfd5
commit 6d2442d824
2 changed files with 9 additions and 10 deletions
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17
src/devices/bus/bbc/userport/sdcard.cpp
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@ -37,10 +37,6 @@
CB2 ==> S_MOSI (Din)
0V ==> S_SEL (Select)
TODO:
- implement SR Mode 0 in via6522_device.
- implement SPI Mode 0 in spi_sdcard_device.
**********************************************************************/
@ -120,21 +116,23 @@ void bbc_sdcardt_device::device_start()
void bbc_sdcard_device::write_cb1(int state)
{
m_sdcard->spi_ss_w(1);
m_sdcard->spi_clock_w(!state);
m_sdcard->spi_clock_w(state);
}
void bbc_sdcard_device::pb_w(uint8_t data)
{
m_sdcard->spi_ss_w(1);
m_sdcard->spi_mosi_w(BIT(data, 0));
m_sdcard->spi_clock_w(!BIT(data, 1));
m_sdcard->spi_clock_w(BIT(data, 1));
m_slot->cb1_w(BIT(data, 1));
}
void bbc_sdcardt_device::write_cb1(int state)
{
m_sdcard->spi_ss_w(1);
m_sdcard->spi_clock_w(!state);
m_sdcard->spi_clock_w(state);
}
void bbc_sdcardt_device::write_cb2(int state)
@ -151,5 +149,8 @@ void bbc_sdcardt_device::pb_w(uint8_t data)
m_turbo = (data & 0x1c) == 0x14;
m_sdcard->spi_ss_w(1);
m_sdcard->spi_clock_w(!BIT(data, 1));
m_sdcard->spi_mosi_w(BIT(data, 0));
m_sdcard->spi_clock_w(BIT(data, 1));
m_slot->cb1_w(BIT(data, 1));
}

2
src/devices/bus/bbc/userport/sdcard.h
View File

@ -27,8 +27,6 @@ public:
// construction/destruction
bbc_sdcard_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
static constexpr feature_type unemulated_features() { return feature::MEDIA; }
protected:
bbc_sdcard_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);