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making bootloader to load the dos kernel to run a shell

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This commit is contained in:
minjaesong
2020-10-30 23:34:31 +09:00
parent d8f7bb3973
commit 21dd2ead8f
9 changed files with 46 additions and 22 deletions
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1
assets/!BOOTSEC Normal file
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@@ -0,0 +1 @@
let p=_BIOS.FIRST_BOOTABLE_PORT;com.sendMessage(p[0],'OPENR"tvdos/TVDOS.SYS",'+p[1]);let r=com.getStatusCode(p[0]);if(0==r)if(com.sendMessage(p[0],"READ"),r=com.getStatusCode([0]),0==r){let g=com.pullMessage(p[0]);eval(g)}else println("I/O Error");else println("TVDOS.SYS not found");

1
assets/bios1.js
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@@ -82,4 +82,5 @@ Object.freeze(_BIOS);
///////////////////////////////////////////////////////////////////////////////
// TODO load a bootsector using 'LOADBOOT'
con.move(4,1);

17
assets/bootsec_source.js Normal file
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@@ -0,0 +1,17 @@
// load TVDOS.SYS
let p = _BIOS.FIRST_BOOTABLE_PORT;
com.sendMessage(p[0], 'OPENR"tvdos/TVDOS.SYS",'+p[1]);
let r = com.getStatusCode(p[0]);
if (r == 0){
com.sendMessage(p[0], "READ");
r = com.getStatusCode([0]);
if (r == 0) {
let g=com.pullMessage(p[0]);
eval(g);
0;
}
else
println("I/O Error");
}
else
println("TVDOS.SYS not found");

18
assets/tvdos/TVDOS.SYS
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@@ -1,11 +1,11 @@
// Boot script
// define TVDOS
var _TVDOS = {};
_TVDOS.VERSION = "1.0";
_TVDOS.DRIVES = {}; // Object where key-value pair is <drive-letter> : [serial-port, drive-number]
// actually figure out the drive letter association
// Drive A is always the device we're currently on
_TVDOS.DRIVES["A"] = _BIOS.FIRST_BOOTABLE_PORT;
//TODO
Object.freeze(_TVDOS);
@@ -53,4 +53,16 @@ filesystem.readAll = function(driveLetter) {
}
return com.pullMessage(port[0]);
};
Object.freeze(filesystem);
Object.freeze(filesystem);
///////////////////////////////////////////////////////////////////////////////
// install other stuffs
filesystem.open("A", "tvdos/gl.js", "R");
var GL = eval(filesystem.readAll("A"));
///////////////////////////////////////////////////////////////////////////////
// Boot script
filesystem.open("A", "tvdos/command.js", "R");
eval(filesystem.readAll("A"));

4
assets/tvdos/flsh.js
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@@ -7,11 +7,11 @@ const welcome_text = "TSVM Disk Operating System, version " + _TVDOS.VERSION;
function print_prompt_text() {
// oh-my-zsh-like prompt
con.color_pair(239,161);
print(" "+CURRENT_DRIVE);
print(" "+CURRENT_DRIVE+":");
con.color_pair(161,253);
con.addch(16);
con.color_pair(0,253);
print("\\"+shell_pwd.join("\\"));
print(" \\"+shell_pwd.join("\\")+" ");
con.color_pair(253,255);
con.addch(16);
con.addch(32);

2
assets/tvdos/gl.js
View File

@@ -101,4 +101,4 @@ GL.drawSpriteOver = function(sheet, xi, yi, x, y) {
}
};
Object.freeze(GL);
Object.freeze(GL); // this returns frozen 'GL'