Retro/pcjs
Watch
1
0
Fork
You've already forked pcjs
 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

More PDP-11 debugger work

Browse source
This commit is contained in:
Jeff Parsons 2016-09-17 18:16:58 -07:00
commit cc70c05c07
6 changed files with 545 additions and 456 deletions
Download patch file Download diff file Expand all files Collapse all files

47
modules/pdp11/lib/defines.js
View file

@ -122,21 +122,38 @@ var PDP11 = {
* automatic inlining will no longer occur.
*/
ADDR_INVALID: -1,
/*
* Processor Modes
*/
MODE: {
KERNEL: 0x0,
SUPER: 0x1,
UNUSED: 0x2,
USER: 0x3,
MASK: 0x3
},
/*
* Processor Status flag definitions (stored in regPSW)
*/
PSW: {
CF: 0x0001, // bit 0: Carry Flag
OF: 0x0002, // bit 1: Overflow Flag
CF_SHIFT: 0,
VF: 0x0002, // bit 1: Overflow Flag (aka OF on Intel processors)
VF_SHIFT: 1,
ZF: 0x0004, // bit 2: Zero Flag
SF: 0x0008, // bit 3: Sign Flag
ZF_SHIFT: 2,
NF: 0x0008, // bit 3: Negative Flag (aka SF -- Sign Flag -- on Intel processors)
NF_SHIFT: 3,
TF: 0x0010, // bit 4: Trap Flag
TF_SHIFT: 4,
PRI: 0x00E0, // bits 5-7: Priority
PRI_SHIFT: 5,
UNUSED: 0x0700, // bits 8-10: unused
REGSET: 0x0800, // bit 11: Register Set
PMODE: 0x3000, // bits 12-13: Previous Mode
CMODE: 0xC000 // bits 14-15: Current Mode
PMODE: 0x3000, // bits 12-13: Previous Mode (see PDP11.MODE)
PMODE_SHIFT:12,
CMODE: 0xC000, // bits 14-15: Current Mode (see PDP11.MODE)
CMODE_SHIFT:14
},
/*
* Interrupt-related flags (stored in intFlags)
@ -150,7 +167,7 @@ var PDP11 = {
* Opcode definitions
*/
OPCODE: {
// to be continued....
// TODO
},
IOBASE_VIRT: 0x00E000, /*000160000*/
@ -168,18 +185,18 @@ var PDP11 = {
};
/*
* PSW "arithmetic" flags are NOT stored in the PSW register; they are maintained across separate result registers,
* hence the RESULT designation.
* PSW arithmetic flags are NOT stored directly into the PSW register; they are maintained across separate
* flag registers.
*/
PDP11.PSW.RESULT = (PDP11.PSW.CF | PDP11.PSW.ZF | PDP11.PSW.SF);
PDP11.PSW.FLAGS = (PDP11.PSW.NF | PDP11.PSW.ZF | PDP11.PSW.VF | PDP11.PSW.CF);
if (NODE) {
global.APPCLASS = APPCLASS;
global.APPNAME = APPNAME;
global.DEBUGGER = DEBUGGER;
global.BYTEARRAYS = BYTEARRAYS;
global.TYPEDARRAYS = TYPEDARRAYS;
global.PDP11 = PDP11;
global.APPCLASS = APPCLASS;
global.APPNAME = APPNAME;
global.DEBUGGER = DEBUGGER;
global.BYTEARRAYS = BYTEARRAYS;
global.TYPEDARRAYS = TYPEDARRAYS;
global.PDP11 = PDP11;
module.exports = PDP11;
}