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New improved PDP-10 processor flag handling

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Jeff 2017-03-04 21:07:56 -08:00 • committed by Jeff Parsons
commit ffb7fa1221
6 changed files with 287 additions and 263 deletions
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36
modules/pdp10/lib/defines.js
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@ -190,7 +190,27 @@ var PDP10 = {
IRQ_MASK: 0x0003,
DEBUGGER: 0x0004, // set if the Debugger wants to perform checks
WAIT: 0x0008, // WAIT operation in progress
PRESERVE: 0x000F, // OPFLAG bits to preserve prior to the next instruction
PRESERVE: 0x000F // OPFLAG bits to preserve prior to the next instruction
},
/*
* Flags returned by getPS() for various program control operations.
*/
PSFLAG: {
OVFL: 0o400000, // Overflow
CARRY0: 0o200000, // Carry 0
CARRY1: 0o100000, // Carry 1
FP_OVFL: 0o040000, // Floating-Point Overflow
BYTE_INT: 0o020000, // Byte Interrupt
USER_MODE: 0o010000, // Processor is in User Mode
USER_IO: 0o004000, // User I/O
FP_UNFL: 0o000100, // Floating-Point Underflow
NO_DIVIDE: 0o000040, // No Divide
/*
* Only the low 18 bits (above) are returned by getPS(); the following (bits 18 to 31)
* are defined for internal use only.
*/
PD_OVFL: 0o1000000 // Pushdown Overflow
},
/*
@ -201,15 +221,15 @@ var PDP10 = {
OVFL: 0o000010, // Overflow
OVFL_IE: 0o000020, // Overflow Interrupt Enabled
TRAP_OFF: 0o000040, // Trap Offset
FPOVFL: 0o000100, // Floating-Point Overflow
FPOVFL_IE: 0o000200, // Floating-Point Overflow Interrupt Enabled
FP_OVFL: 0o000100, // Floating-Point Overflow
FP_OVFL_IE: 0o000200, // Floating-Point Overflow Interrupt Enabled
CLOCK: 0o001000, // Clock Flag
CLOCK_IE: 0o002000, // Clock Interrupt Enabled
NXM: 0o010000, // Non-Existent Memory
PRM: 0o020000, // Memory Protection
ADB: 0o040000, // Address Break
UIO: 0o100000, // User In-Out
PDOVFL: 0o200000 // Pushdown Overflow (TODO: Verify this is correct; the May 1968 doc may have a typo)
PD_OVFL: 0o200000 // Pushdown Overflow (TODO: Verify this is correct; the May 1968 doc may have a typo)
},
/*
@ -222,9 +242,9 @@ var PDP10 = {
OVFL_CL: 0o000010, // Clear Overflow
OVFL_IE: 0o000020, // Enable Overflow Interrupt
OVFL_ID: 0o000040, // Disable Overflow Interrupt
FPOVFL_CL: 0o000100, // Clear Floating-Point Overflow
FPOVFL_IE: 0o000200, // Enable Floating-Point Overflow Interrupt
FPOVFL_ID: 0o000400, // Disable Floating-Point Overflow Interrupt
FP_OVFL_CL: 0o000100, // Clear Floating-Point Overflow
FP_OVFL_IE: 0o000200, // Enable Floating-Point Overflow Interrupt
FP_OVFL_ID: 0o000400, // Disable Floating-Point Overflow Interrupt
CLOCK_CL: 0o001000, // Clear Clock Flag
CLOCK_IE: 0o002000, // Enable Clock Interrupt
CLOCK_ID: 0o004000, // Disable Clock Interrupt
@ -232,7 +252,7 @@ var PDP10 = {
PRM_CL: 0o020000, // Clear Memory Protection
ADB_CL: 0o040000, // Clear Address Break
UIO_CL: 0o200000, // Clear All In-Out Devices
PDOVFL_CL: 0o400000 // Clear Pushdown Overflow
PD_OVFL_CL: 0o400000 // Clear Pushdown Overflow
},
/*