From b81b6c8f5accac3ca03f928d845910575b74e29d Mon Sep 17 00:00:00 2001
From: n loewen <nick@nloewen.com>
Date: Wed, 2 Aug 2023 10:52:47 +0100
Subject: [PATCH] Move config constants to a config file

---
 assembler.js | 3 +--
 display.js   | 2 +-
 simulator.js | 3 +--
 3 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/assembler.js b/assembler.js
index 7f6f86e..b7dd9c7 100644
--- a/assembler.js
+++ b/assembler.js
@@ -1,12 +1,11 @@
 const printMemory = require('./print-memory.js');
+const { INITIAL_IP_ADDRESS, START_OF_DISPLAY_MEM } = require('./machine.config.js');
 
 // 1 = verbose
 // 2 = what i'm currently focusing on
 // 3 = always print
 // 4 = silent
 const DEBUG = 4;
-const INITIAL_IP_ADDRESS = 48;
-const START_OF_DISPLAY_MEM = 0;
 
 const mnemonicsWithOptionalArgs = ['end', 'cfc', 'chp'];
 const mnemonics2opcodes = {
diff --git a/display.js b/display.js
index 0373ac3..b01d63c 100644
--- a/display.js
+++ b/display.js
@@ -1,4 +1,4 @@
-const START_OF_DISPLAY_MEM = 0;
+const { START_OF_DISPLAY_MEM } = require('./machine.config');
 
 exports.printDisplay = (mem) => {
   const disp = START_OF_DISPLAY_MEM;
diff --git a/simulator.js b/simulator.js
index 868a12c..abc3b1e 100644
--- a/simulator.js
+++ b/simulator.js
@@ -3,8 +3,7 @@
 // - instructions are two bytes long:
 //   one byte for the opcode, one for the argument
 
-const INITIAL_IP_ADDRESS = 48;
-const CYCLE_LIMIT = 128; // max number of times to step the CPU, to stop endless loops
+const { INITIAL_IP_ADDRESS, CYCLE_LIMIT } = require('./machine.config');
 
 const display = require('./display.js');