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minified bios

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This commit is contained in:
minjaesong
2020-10-31 22:39:34 +09:00
parent 055b825cca
commit af876866b5
2 changed files with 81 additions and 80 deletions
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81
assets/bios1.js
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@@ -1,80 +1 @@
println("TERRAN Megatrends inc.");
//println("Main RAM:"+(system.maxmem() >> 10)+" KBytes");
///////////////////////////////////////////////////////////////////////////////
// Perform memtest
let memptr = 0;
const memtestptn = [
[0x00,0xFF,0xAA,0x55 , 0x69,0x0F,0xA5,0x1E , 0xC7,0x71,0x8E,0xE3 , 0xCA,0xFE,0xBA,0xBE],
[0xFF,0xFF,0xFF,0xFF , 0xFF,0xFF,0xFF,0xFF , 0xFF,0xFF,0xFF,0xFF , 0xFF,0xFF,0xFF,0xFF]
];
con.move(2,1);
print("000 KB OK")
try {
while (memptr < (8 << 20)) {
// just print a number
con.move(2,1);
var memptrtext = ""+((memptr + 1) >> 10);
print((memptrtext < 10) ? "00"+memptrtext : (memptrtext < 100) ? "0"+memptrtext : memptrtext);
// perform memory test
for (var ptn = 0; ptn < memtestptn.length; ptn++) {
for (var bi = 0; bi < memtestptn[ptn].length; bi++) {
sys.poke(memptr + bi, memtestptn[ptn][bi]);
if (memtestptn[ptn][bi] != sys.peek(memptr + bi)) throw "Memory Error";
}
for (var bi = 0; bi < memtestptn[ptn].length; bi++) {
sys.poke(memptr + bi, 255 - memtestptn[ptn][bi]);
if (255 - memtestptn[ptn][bi] != sys.peek(memptr + bi)) throw "Memory Error";
}
}
memptr += memtestptn[0].length;
}
}
catch (e) {
if (e == "Memory Error") {
println(" Memory Error");
}
else {
println(" KB OK!");
}
}
///////////////////////////////////////////////////////////////////////////////
// probe bootable device
var _BIOS = {};
// Syntax: [Port, Drive-number]
// Port #0-3: Serial port 1-4
// #4+ : Left for future extension
// Drive-number always starts at 1
_BIOS.FIRST_BOOTABLE_PORT = [0,1]; // ah screw it
Object.freeze(_BIOS);
///////////////////////////////////////////////////////////////////////////////
// load a bootsector using 'LOADBOOT'
let portNumber = 0;
let driveStatus = 0;
while (portNumber < 4) {
if (com.areYouThere(portNumber)) {
com.sendMessage(portNumber, "LOADBOOT");
driveStatus = com.getStatusCode(portNumber);
if (driveStatus == 0) break;
}
portNumber += 1;
}
if (portNumber < 4) {
eval(com.fetchResponse(portNumber).trimNull());
}
else {
printerrln("No bootable medium found.");
}
println("TERRAN Megatrends inc.");let p=0;let m=[[0,255,170,85,105,15,165,30,199,113,142,227,202,254,186,190],[255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255]];con.move(2,1),print("000 KB OK");try{for(;p<8<<20;){con.move(2,1);var x=""+(p+1>>10);print(x<10?"00"+x:x<100?"0"+x:x);for(var t=0;t<m.length;t++){for(var b=0;b<m[t].length;b++)if(sys.poke(p+b,m[t][b]),m[t][b]!=sys.peek(p+b))throw"Memory Error";for(var b=0;b<m[t].length;b++)if(sys.poke(p+b,255-m[t][b]),255-m[t][b]!=sys.peek(p+b))throw"Memory Error"}p+=m[0].length}}catch(t){"Memory Error"==t?println(" Memory Error"):println(" KB OK!")}var _BIOS={FIRST_BOOTABLE_PORT:[0,1]};Object.freeze(_BIOS);let n=0,s=0;for(;n<4&&(!com.areYouThere(n)||(com.sendMessage(n,"LOADBOOT"),s=com.getStatusCode(n),0!=s));)n+=1;n<4?eval(com.fetchResponse(n).trimNull()):printerrln("No bootable medium found.");

80
assets/bios_source.js Normal file
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@@ -0,0 +1,80 @@
println("TERRAN Megatrends inc.");
//println("Main RAM:"+(system.maxmem() >> 10)+" KBytes");
///////////////////////////////////////////////////////////////////////////////
// Perform memtest
let memptr = 0;
const memtestptn = [
[0x00,0xFF,0xAA,0x55 , 0x69,0x0F,0xA5,0x1E , 0xC7,0x71,0x8E,0xE3 , 0xCA,0xFE,0xBA,0xBE],
[0xFF,0xFF,0xFF,0xFF , 0xFF,0xFF,0xFF,0xFF , 0xFF,0xFF,0xFF,0xFF , 0xFF,0xFF,0xFF,0xFF]
];
con.move(2,1);
print("000 KB OK")
try {
while (memptr < (8 << 20)) {
// just print a number
con.move(2,1);
var memptrtext = ""+((memptr + 1) >> 10);
print((memptrtext < 10) ? "00"+memptrtext : (memptrtext < 100) ? "0"+memptrtext : memptrtext);
// perform memory test
for (var ptn = 0; ptn < memtestptn.length; ptn++) {
for (var bi = 0; bi < memtestptn[ptn].length; bi++) {
sys.poke(memptr + bi, memtestptn[ptn][bi]);
if (memtestptn[ptn][bi] != sys.peek(memptr + bi)) throw "Memory Error";
}
for (var bi = 0; bi < memtestptn[ptn].length; bi++) {
sys.poke(memptr + bi, 255 - memtestptn[ptn][bi]);
if (255 - memtestptn[ptn][bi] != sys.peek(memptr + bi)) throw "Memory Error";
}
}
memptr += memtestptn[0].length;
}
}
catch (e) {
if (e == "Memory Error") {
println(" Memory Error");
}
else {
println(" KB OK!");
}
}
///////////////////////////////////////////////////////////////////////////////
// probe bootable device
var _BIOS = {};
// Syntax: [Port, Drive-number]
// Port #0-3: Serial port 1-4
// #4+ : Left for future extension
// Drive-number always starts at 1
_BIOS.FIRST_BOOTABLE_PORT = [0,1]; // ah screw it
Object.freeze(_BIOS);
///////////////////////////////////////////////////////////////////////////////
// load a bootsector using 'LOADBOOT'
let portNumber = 0;
let driveStatus = 0;
while (portNumber < 4) {
if (com.areYouThere(portNumber)) {
com.sendMessage(portNumber, "LOADBOOT");
driveStatus = com.getStatusCode(portNumber);
if (driveStatus == 0) break;
}
portNumber += 1;
}
if (portNumber < 4) {
eval(com.fetchResponse(portNumber).trimNull());
}
else {
printerrln("No bootable medium found.");
}