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Interrupt enabling works the other way around I think, and both registers with only one bit defined should probably return '1' in all other places?

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This commit is contained in:
Thomas Harte 2016-11-25 21:24:59 +08:00
parent d5f9e0aa3b
commit 54246c8f1a
1 changed files with 3 additions and 3 deletions
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6
Machines/Oric/Microdisc.cpp
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@ -44,7 +44,7 @@ void Microdisc::set_control_register(uint8_t control)
set_is_double_density(!(control & 0x08)); set_is_double_density(!(control & 0x08));
// b0: IRQ enable // b0: IRQ enable
irq_enable_ = !(control & 0x01); irq_enable_ = !!(control & 0x01);
// b7: EPROM select (0 = select) // b7: EPROM select (0 = select)
// b1: ROM disable (0 = disable) // b1: ROM disable (0 = disable)
@ -63,10 +63,10 @@ bool Microdisc::get_interrupt_request_line()
uint8_t Microdisc::get_interrupt_request_register() uint8_t Microdisc::get_interrupt_request_register()
{ {
return get_interrupt_request_line() ? 0x00 : 0x80; return 0x7f | (get_interrupt_request_line() ? 0x00 : 0x80);
} }
uint8_t Microdisc::get_data_request_register() uint8_t Microdisc::get_data_request_register()
{ {
return get_data_request_line() ? 0x00 : 0x80; return 0x7f | (get_data_request_line() ? 0x00 : 0x80);
} }