From 54246c8f1aa8763e5b143de05bf6b6ce5719b855 Mon Sep 17 00:00:00 2001
From: Thomas Harte <thomas.harte@gmail.com>
Date: Fri, 25 Nov 2016 21:24:59 +0800
Subject: [PATCH] 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?
---
Machines/Oric/Microdisc.cpp | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/Machines/Oric/Microdisc.cpp b/Machines/Oric/Microdisc.cpp
index 743ef21a2..a4f784837 100644
--- a/Machines/Oric/Microdisc.cpp
+++ b/Machines/Oric/Microdisc.cpp
@@ -44,7 +44,7 @@ void Microdisc::set_control_register(uint8_t control)
set_is_double_density(!(control & 0x08));
// b0: IRQ enable
- irq_enable_ = !(control & 0x01);
+ irq_enable_ = !!(control & 0x01);
// b7: EPROM select (0 = select)
// b1: ROM disable (0 = disable)
@@ -63,10 +63,10 @@ bool Microdisc::get_interrupt_request_line()
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()
{
- return get_data_request_line() ? 0x00 : 0x80;
+ return 0x7f | (get_data_request_line() ? 0x00 : 0x80);
}