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tk2000: Keyboard interface rewrite (nw)

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This commit is contained in:
AJR 2019-06-16 13:22:08 -04:00
parent b0b946d37f
commit 5b28cbd49b
1 changed files with 17 additions and 10 deletions
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27
src/mame/drivers/tk2000.cpp
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@ -82,11 +82,12 @@ private:
int m_speaker_state;
int m_cassette_state;
uint8_t m_strobe;
uint8_t m_kbout;
uint8_t *m_ram_ptr;
int m_ram_size;
bool m_printer_busy;
bool m_ctrl_key;
TIMER_DEVICE_CALLBACK_MEMBER(apple2_interrupt);
@ -133,12 +134,14 @@ void tk2000_state::machine_start()
m_cassette_state = 0;
m_cassette->output(-1.0f);
m_printer_busy = false;
m_ctrl_key = false;
// setup save states
save_item(NAME(m_speaker_state));
save_item(NAME(m_cassette_state));
save_item(NAME(m_strobe));
save_item(NAME(m_kbout));
save_item(NAME(m_printer_busy));
save_item(NAME(m_ctrl_key));
// setup video pointers
m_video->m_ram_ptr = m_ram_ptr;
@ -149,7 +152,7 @@ void tk2000_state::machine_start()
void tk2000_state::machine_reset()
{
m_strobe = 0;
m_kbout = 0;
}
/***************************************************************************
@ -188,10 +191,7 @@ WRITE_LINE_MEMBER(tk2000_state::printer_busy_w)
void tk2000_state::kbout_w(uint8_t data)
{
// write row mask for keyboard scan
m_strobe = 0xff;
for (int i = 0; i < 8; i++)
if (BIT(data, i))
m_strobe &= m_row[i]->read();
m_kbout = data;
m_printer->write_data0(BIT(data, 0));
m_printer->write_data1(BIT(data, 1));
@ -205,7 +205,15 @@ void tk2000_state::kbout_w(uint8_t data)
uint8_t tk2000_state::kbin_r()
{
return m_strobe | (m_printer_busy ? 0x40 : 0);
uint8_t kbin = 0;
for (int i = 0; i < 8; i++)
if (BIT(m_kbout, i))
kbin |= m_row[i]->read();
if (m_ctrl_key)
kbin |= m_kbspecial->read();
return kbin | (m_printer_busy ? 0x40 : 0);
}
uint8_t tk2000_state::casout_r()
@ -267,8 +275,7 @@ WRITE_LINE_MEMBER(tk2000_state::rom_ram_w)
WRITE_LINE_MEMBER(tk2000_state::ctrl_key_w)
{
if (state)
m_strobe = m_kbspecial->read();
m_ctrl_key = state;
}
uint8_t tk2000_state::c080_r(offs_t offset)