Sprinter/mame
2
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

shuffle some code around, comms still wrong (nw)

Browse Source
This commit is contained in:
David Haywood 2014-06-06 14:09:31 +00:00
parent 323cb8a4c9
commit ef0c473e7d
1 changed files with 97 additions and 69 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

166
src/mame/drivers/kenseim.c
View File

@ -200,6 +200,8 @@ public:
UINT8 m_to_68k_cmd_d9;
UINT8 m_to_68k_cmd_req;
UINT8 m_to_68k_cmd_LVm;
UINT8 m_to_68k_cmd_flags;
int m_from68k_ack;
int m_from68k_st4;
@ -220,6 +222,10 @@ public:
};
/*******************************
Misc System Functions
******************************/
void kenseim_state::set_leds(UINT32 ledstates)
{
for (int i=0; i<20; i++)
@ -310,39 +316,6 @@ WRITE8_MEMBER(kenseim_state::portc_w)
logerror("%s write %01x to port C (%02x unmasked)\n", machine().describe_context(), (data & 0xf0)>>4, data );
}
WRITE8_MEMBER(kenseim_state::portd_w)
{
// port direction is set to 4-in 4-out
printf("%s write %01x to port D (%02x unmasked) (to 68k command flags?)\n", machine().describe_context(), data & 0x0f, data) ;
}
WRITE8_MEMBER(kenseim_state::porte_w)
{
// only access is at 0ABE, surrounded by port D reads / writes
m_to_68k_cmd_low = data;
printf("%s write %02x to port E (to 68k command bits?)\n", machine().describe_context(), data);
}
READ8_MEMBER(kenseim_state::portd_r)
{
// port direction is set to 4-in 4-out
// int ret = rand() & 0xf0;
int ret;
int in10 = m_from68k_ack; // loop at 0x929 - 0x92e waits for this to be 0
int in80 = m_from68k_st4; // loop at 0x931 - 0x936 then waits for this to be 1
int in20 = m_from68k_st3;
int in40 = m_from68k_st2;
ret = (in10 << 4) | (in20 << 5) | (in40 << 6) | (in80 << 7);
// comms port maybe? checks for 0x10 (bit 4,a) to be clear in a tight loop (092B) then for bit 0x80 to be set in another tight loop (0933) then at (0947) it checks that bits 0xe0 aren't set.
logerror("%s read port D (returning %02x)\n", machine().describe_context(), ret);
return ret;
}
READ8_MEMBER(kenseim_state::portc_r)
{
@ -367,6 +340,45 @@ READ8_MEMBER(kenseim_state::portb_r)
}
/*******************************
Comms?
******************************/
/* 68k side COMMS reads */
CUSTOM_INPUT_MEMBER(kenseim_state::kenseim_cmd_1234_r)
{
// printf("kenseim_cmd_1234_r\n")
return (m_to_68k_cmd_low & 0x0f)>>0;
}
CUSTOM_INPUT_MEMBER(kenseim_state::kenseim_cmd_5678_r)
{
// printf("kenseim_cmd_5678_r\n")
return (m_to_68k_cmd_low & 0xf0)>>4;
}
CUSTOM_INPUT_MEMBER(kenseim_state::kenseim_cmd_9_r)
{
return (m_to_68k_cmd_d9 & 0x1); // bit 9 of command?
}
CUSTOM_INPUT_MEMBER(kenseim_state::kenseim_cmd_req_r)
{
logerror("%s kenseim_cmd_req_r\n", machine().describe_context());
return m_to_68k_cmd_req;
}
CUSTOM_INPUT_MEMBER(kenseim_state::kenseim_cmd_LVm_r)
{
// needed for COMMAND WAIT message..
return m_to_68k_cmd_LVm;;
}
/* 68k side COMMS writes */
WRITE16_MEMBER(kenseim_state::cps1_kensei_w)
@ -386,7 +398,7 @@ WRITE16_MEMBER(kenseim_state::cps1_kensei_w)
m_from68k_st2 = (data & 0x0400) >> 10;
m_from68k_st3 = (data & 0x0800) >> 11;
logerror("%s cps1_kensei_w offs %04x (from 68k to DRIVE BOARD via CN2) (%02x) (%d ACK, %d ST4, %d ST2, %d ST3) \n", machine().describe_context(), offset * 2, data, m_from68k_ack, m_from68k_st4, m_from68k_st2, m_from68k_st3 );
printf("%s cps1_kensei_w offs %04x (from 68k to DRIVE BOARD via CN2) (%02x) (%d ACK, %d ST4, %d ST2, %d ST3) \n", machine().describe_context(), offset * 2, data, m_from68k_ack, m_from68k_st4, m_from68k_st2, m_from68k_st3 );
}
else
@ -395,6 +407,57 @@ WRITE16_MEMBER(kenseim_state::cps1_kensei_w)
}
}
/* Z80 side COMMS writes */
WRITE8_MEMBER(kenseim_state::portd_w)
{
// port direction is set to 4-in 4-out
m_to_68k_cmd_flags = data & 0xf;
// bit 0x4, 0x02 bit 0x1 used.
// wrong
m_to_68k_cmd_req = (m_to_68k_cmd_flags&0x2)>>1;
m_to_68k_cmd_LVm = ((m_to_68k_cmd_flags & 0x4) >> 2) ^ 1;
m_to_68k_cmd_d9 = (m_to_68k_cmd_flags&0x1)>>0;
printf("%s write %01x to port D (%02x unmasked) (from DRIVE BOARD to 68k command flags?)\n", machine().describe_context(), data & 0x0f, data) ;
}
WRITE8_MEMBER(kenseim_state::porte_w)
{
// only access is at 0ABE, surrounded by port D reads / writes
m_to_68k_cmd_low = data;
printf("%s write %02x to port E (from DRIVE BOARD to 68k command bits?)\n", machine().describe_context(), data);
}
/* Z80 side COMMS reads */
READ8_MEMBER(kenseim_state::portd_r)
{
// port direction is set to 4-in 4-out
// int ret = rand() & 0xf0;
int ret;
int in10 = m_from68k_ack; // loop at 0x929 - 0x92e waits for this to be 0
int in80 = m_from68k_st4; // loop at 0x931 - 0x936 then waits for this to be 1
int in20 = m_from68k_st3;
int in40 = m_from68k_st2;
ret = (in10 << 4) | (in20 << 5) | (in40 << 6) | (in80 << 7);
// comms port maybe? checks for 0x10 (bit 4,a) to be clear in a tight loop (092B) then for bit 0x80 to be set in another tight loop (0933) then at (0947) it checks that bits 0xe0 aren't set.
logerror("%s read port D (returning %02x)\n", machine().describe_context(), ret);
return ret;
}
/*
Manufacturer: Fujitsu
Part Number: MB89363 / MB89363B / MB89363R
@ -534,41 +597,6 @@ static MACHINE_CONFIG_DERIVED_CLASS( kenseim, cps1_12MHz, kenseim_state )
MCFG_QUANTUM_PERFECT_CPU("maincpu")
MACHINE_CONFIG_END
CUSTOM_INPUT_MEMBER(kenseim_state::kenseim_cmd_1234_r)
{
// printf("kenseim_cmd_1234_r\n")
return (m_to_68k_cmd_low & 0x0f)>>0;
}
CUSTOM_INPUT_MEMBER(kenseim_state::kenseim_cmd_5678_r)
{
// printf("kenseim_cmd_5678_r\n")
m_to_68k_cmd_low = rand();// hack;
return (m_to_68k_cmd_low & 0xf0)>>4;
}
CUSTOM_INPUT_MEMBER(kenseim_state::kenseim_cmd_9_r)
{
return (m_to_68k_cmd_d9 & 0x1); // bit 9 of command?
}
CUSTOM_INPUT_MEMBER(kenseim_state::kenseim_cmd_req_r)
{
m_to_68k_cmd_req = rand()&1; // hack
return m_to_68k_cmd_req;
}
CUSTOM_INPUT_MEMBER(kenseim_state::kenseim_cmd_LVm_r)
{
// needed for COMMAND WAIT message..
return m_to_68k_cmd_LVm;
}
static INPUT_PORTS_START( kenseim )
// the regular CPS1 input ports are used for comms with the extra board
PORT_START("IN0")