RBIL61 - REAL TIME CLOCK

RBIL61 - REAL TIME CLOCK

Opcodes List {#idx175414}

PORTIBM PC Portable (uses same BIOS as XT) 0022-0023 - Intel 82358DT 'Mongoose' EISA(Enhanced Industry-Standard Architecture) A 32-bit superset of the IBMInternational Busiuness Machines ATIBM PC AT's expansion bus (which is now known as the ISA or Industry-Standard Architecture bus). CHIPSET - 82359 DRAM(Dynamic Random Access Memory) RAM memory which essentially consists of a tiny capacitor for each bit of memory. Since capacitors do not hold a charge indefinitely, DRAM must be constantly refreshed to avoid losing its contents. Also, the process of reading the contents of the memory are destructive, meaning extra time must be spent restoring the contents of memory addresses which are accessed, so DRAM is slower than SRAM. See also Refresh, SRAM. CONTROLLER {#idx133933}

PORTIBM PC Portable (uses same BIOS as XT) 0022-0024 - CHIPSET FROM PICO POWER, UMC or PCChips {#idx135309}

PORTIBM PC Portable (uses same BIOS as XT) 0070-007F - CMOS RAMA small amount (typically 64 or 128 bytes) of memory in the system's real-time clock chip that is preserved by the clock's battery and is used for storing configuration information. See also Real-Time Clock./RTCsee Real-Time Clock (REAL TIME CLOCK) {#idx140396}

PORTIBM PC Portable (uses same BIOS as XT) 0140-0157 - RTCsee Real-Time Clock (alternate Real Time Clock for XTIBM PC XT) (1st at 0340-0357) {#idx142808}

PORTIBM PC Portable (uses same BIOS as XT) 0240-0257 - RTCsee Real-Time Clock (alternate Real Time Clock for XTIBM PC XT) (1st at 0340-0357) {#idx144045}

PORTIBM PC Portable (uses same BIOS as XT) 02C0-02DF - XT-Real Time Clock 2 (default jumpered address) {#idx144634}

PORTIBM PC Portable (uses same BIOS as XT) 0340-0357 - RTCsee Real-Time Clock (1st Real Time Clock for XTIBM PC XT) {#idx146475}