RBIL61 - HIMEM.SYS

RBIL61 - HIMEM.SYS

CALL F000h:FF82h - PHOENIX CASCADE BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. A20(Address line 20) The 80286 and higher CPUs allow addresses in real mode to extend slightly beyond the one megabyte mark, which causes an incompatibility with some older programs which expect such addresses to wrap back to the beginning of the address space. For complete compatibility with the 8088, newer machines thus contain circuitry which permits the twenty-first address line (A20) to be disabled. The CPU then effectively has only twenty address lines in real mode, just as the 8088 does, and addresses which would extend beyond the one megabyte mark wrap to the beginning of the address space. See also High Memory Area, Real Mode. CONTROL ENTRY {#idx159388}

INT 15 - Phoenix BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. v4.0 - GET MEMORY SIZE FOR >64M CONFIGURATIONS {#idx24878}

INT 15 - SYSTEM - GET EXTENDED MEMORY SIZE (286+) {#idx20972}

INT 2F - BMB Compuscience Canada Utilities Interface - INSTALLATION CHECK {#idx75075}

INT 2F - EXTENDED MEMORY SPECIFICATION (XMSsee Extended Memory Specification) v2+ - GET DRIVER ADDRESS {#idx83388}{#idx83404}{#idx83415}{#idx83571}{#idx83676}

INT 2F - HIMEM.SYS - Mach 20 SUPPORT {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx83733}

INT 2F - HIMEM.SYS v2.77+ - GET A20(Address line 20) The 80286 and higher CPUs allow addresses in real mode to extend slightly beyond the one megabyte mark, which causes an incompatibility with some older programs which expect such addresses to wrap back to the beginning of the address space. For complete compatibility with the 8088, newer machines thus contain circuitry which permits the twenty-first address line (A20) to be disabled. The CPU then effectively has only twenty address lines in real mode, just as the 8088 does, and addresses which would extend beyond the one megabyte mark wrap to the beginning of the address space. See also High Memory Area, Real Mode. HANDLER NUMBER {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx83350}

INT 2F - HIMEM.SYS v2.77+ - GET EXTERNAL A20(Address line 20) The 80286 and higher CPUs allow addresses in real mode to extend slightly beyond the one megabyte mark, which causes an incompatibility with some older programs which expect such addresses to wrap back to the beginning of the address space. For complete compatibility with the 8088, newer machines thus contain circuitry which permits the twenty-first address line (A20) to be disabled. The CPU then effectively has only twenty address lines in real mode, just as the 8088 does, and addresses which would extend beyond the one megabyte mark wrap to the beginning of the address space. See also High Memory Area, Real Mode. HANDLER ADDRESS {callout or callback, undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx83737}{#idx83747}{#idx83756}

INT 2F - HIMEM.SYS v3.09+ - GET XMSsee Extended Memory Specification HANDLE TABLE {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx83361}{#idx83367}{#idx83371}

INT 2F - Novell DOS 7+ - MEMORYMAX CREATE ACCESS KEY {#idx78528}

INT 2F - Novell DOS 7+ - MEMORYMAX DESTROY ACCESS KEY {#idx78541}

INT 2F - Novell DOS 7+ - MEMORYMAX GET PAGE TABLE ENTRY {#idx78501}

INT 2F - Novell DOS 7+ - MEMORYMAX INSTALLATION CHECK {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx78460}

INT 2F - Novell DOS 7+ - MEMORYMAX SET PAGE TABLE ENTRY {#idx78515}

INT 78 - HugeRealMode Driver - GET ENTRY POINT {#idx122265}

MEM 0070h:0100h - DOS 5+ - ORIGINAL INTERRUPT VECTORS 10h,13h,15h,19h,1Bh {#idx163063}

MEM 0080h:0000h - 80286 CPU(Central Processing Unit) The microprocessor which executes programs on your computer. - LOADALL WORKSPACE {#idx163111}

MEM 80C0h:0000h - COMPAQ DIAGNOSTICS REGISTER {#idx163141}{#idx163153}