diff --git a/gui.js b/gui.js
index 4100ab2..c7e2b8a 100644
--- a/gui.js
+++ b/gui.js
@@ -10,7 +10,7 @@ const properties = {};
const numeralSystems = [
{name: "Binary", base: 2, length: 8, top: 125},
- {name: "Octal", base: 8, length: 3, top: 150, prefix: "\\"},
+ {name: "Octal", base: 8, length: 3, top: 150, prefix: "0o"},
{name: "Hexadecimal", base: 16, length: 2, top: 175, prefix: "0x"},
];
@@ -131,6 +131,8 @@ function drawNumeral({name, base, length, top, prefix}) {
result *= -1;
result ^= 0xFF;
++result;
+ // Force octal numbers to begin with 7
+ result |= (base === 8) ? 0o700 : 0;
}
}
diff --git a/index.html b/index.html
index 4759f8c..693cf45 100644
--- a/index.html
+++ b/index.html
@@ -2,6 +2,11 @@
Arithmetic
+