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(MESS) Altos5: cleaned up banking conversion; changed fdc to 1MHz as suggested by OG.

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This commit is contained in:
Robbbert 2013-06-09 07:32:13 +00:00
parent 088db83bc2
commit 6a8eda0e53
1 changed files with 3 additions and 7 deletions
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10
src/mess/drivers/altos5.c
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@ -120,13 +120,9 @@ UINT8 altos5_state::convert(offs_t offset, bool state)
// if WPRT point at nothing
if (state & BIT(data, 7))
data = 0x30;
else
// normalise bank number and use it
if (BIT(data, 6))
data-= 0x20;
else
data-= 0x10;
// mask off wprt (no longer needed)
// normalise bank number (4x becomes 0x; 2x and 1x are already ok)
return data & 0x3f;
}
@ -494,7 +490,7 @@ static MACHINE_CONFIG_START( altos5, altos5_state )
MCFG_Z80SIO0_ADD("z80sio", XTAL_8MHz / 2, sio_intf )
MCFG_RS232_PORT_ADD("rs232", rs232_intf, default_rs232_devices, "serial_terminal")
MCFG_TIMER_DRIVER_ADD_PERIODIC("ctc_tick", altos5_state, ctc_tick, attotime::from_hz(XTAL_8MHz / 4))
MCFG_FD1797x_ADD("fdc", XTAL_8MHz / 4)
MCFG_FD1797x_ADD("fdc", XTAL_8MHz / 8)
MCFG_FLOPPY_DRIVE_ADD("fdc:0", altos5_floppies, "525dd", floppy_image_device::default_floppy_formats)
MCFG_FLOPPY_DRIVE_ADD("fdc:1", altos5_floppies, "525dd", floppy_image_device::default_floppy_formats)
MACHINE_CONFIG_END