From cf81293d79cf3a5cfbcdb55eb6368bbcb5f06fd7 Mon Sep 17 00:00:00 2001
From: Test_User <hax@andrewyu.org>
Date: Thu, 16 Feb 2023 14:57:20 -0500
Subject: Finish adding basic arithmetic instructions

---
 cpu/instructions/arithmetic/add_with_carry.txt       | 10 ++++++++++
 cpu/instructions/arithmetic/signed_divide.txt        | 10 ++++++++++
 cpu/instructions/arithmetic/signed_multiply.txt      | 14 ++++++++++++++
 cpu/instructions/arithmetic/subtract_with_borrow.txt | 10 ++++++++++
 cpu/instructions/arithmetic/unsigned_divide.txt      | 10 ++++++++++
 cpu/instructions/arithmetic/unsigned_multiply.txt    | 14 ++++++++++++++
 6 files changed, 68 insertions(+)
 create mode 100644 cpu/instructions/arithmetic/add_with_carry.txt
 create mode 100644 cpu/instructions/arithmetic/signed_divide.txt
 create mode 100644 cpu/instructions/arithmetic/signed_multiply.txt
 create mode 100644 cpu/instructions/arithmetic/subtract_with_borrow.txt
 create mode 100644 cpu/instructions/arithmetic/unsigned_divide.txt
 create mode 100644 cpu/instructions/arithmetic/unsigned_multiply.txt

(limited to 'cpu/instructions/arithmetic')

diff --git a/cpu/instructions/arithmetic/add_with_carry.txt b/cpu/instructions/arithmetic/add_with_carry.txt
new file mode 100644
index 0000000..b5d4652
--- /dev/null
+++ b/cpu/instructions/arithmetic/add_with_carry.txt
@@ -0,0 +1,10 @@
+Number of parameters: 5
+
+Usage:
+	add_with_carry <output> <value0> <value1> <reference> <offset>
+
+Effect:
+	Adds (<value0> + bit <offset> in <reference>) to <value1> and stores it in <output>
+
+Exceptions:
+	None
diff --git a/cpu/instructions/arithmetic/signed_divide.txt b/cpu/instructions/arithmetic/signed_divide.txt
new file mode 100644
index 0000000..2746f71
--- /dev/null
+++ b/cpu/instructions/arithmetic/signed_divide.txt
@@ -0,0 +1,10 @@
+Number of parameters: 4
+
+Usage:
+	signed_divide <result> <remainder> <numerand> <divisor>
+
+Effect:
+	Performs the signed division <numerand>/<divisor>, storing the integer result in <result> and the remainder in <remainder>
+
+Exceptions:
+	Division by 0
diff --git a/cpu/instructions/arithmetic/signed_multiply.txt b/cpu/instructions/arithmetic/signed_multiply.txt
new file mode 100644
index 0000000..8f5a8ac
--- /dev/null
+++ b/cpu/instructions/arithmetic/signed_multiply.txt
@@ -0,0 +1,14 @@
+Number of parameters: 4
+
+Usage:
+	signed_multiply <overflow> <result> <value0> <value1>
+
+Effect:
+	Performs the signed multiplication <value0>*<value1>, storing the integer result in <result> and any overflowing bits into <overflow>
+
+Exceptions:
+	None
+
+Flags:
+	Sets the overflow flag if <overflow>:<result> != <result>
+	Carry flag is never set
diff --git a/cpu/instructions/arithmetic/subtract_with_borrow.txt b/cpu/instructions/arithmetic/subtract_with_borrow.txt
new file mode 100644
index 0000000..8f06e37
--- /dev/null
+++ b/cpu/instructions/arithmetic/subtract_with_borrow.txt
@@ -0,0 +1,10 @@
+Number of parameters: 5
+
+Usage:
+	subtract_with_borrow <output> <value0> <value1> <reference> <offset>
+
+Effect:
+	Subtracts (<value0> + bit <offset> in <reference>) from <value1>
+
+Exceptions:
+	None
diff --git a/cpu/instructions/arithmetic/unsigned_divide.txt b/cpu/instructions/arithmetic/unsigned_divide.txt
new file mode 100644
index 0000000..b08f2ea
--- /dev/null
+++ b/cpu/instructions/arithmetic/unsigned_divide.txt
@@ -0,0 +1,10 @@
+Number of parameters: 4
+
+Usage:
+	unsigned_divide <result> <remainder> <numerand> <divisor>
+
+Effect:
+	Performs the unsigned division <numerand>/<divisor>, storing the integer result in <result> and the remainder in <remainder>
+
+Exceptions:
+	Division by 0
diff --git a/cpu/instructions/arithmetic/unsigned_multiply.txt b/cpu/instructions/arithmetic/unsigned_multiply.txt
new file mode 100644
index 0000000..da1cfbb
--- /dev/null
+++ b/cpu/instructions/arithmetic/unsigned_multiply.txt
@@ -0,0 +1,14 @@
+Number of parameters: 4
+
+Usage:
+	unsigned_multiply <overflow> <result> <value0> <value1>
+
+Effect:
+	Performs the unsigned multiplication <value0>*<value1>, storing the integer result in <result> and any overflowing bits into <overflow>
+
+Exceptions:
+	None
+
+Flags:
+	Sets the carry flag if the overflow was non-zero
+	The overflow flag is never set
-- 
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