Because the WD1770 is capable of single density mode and uses the same IBM360 derived floppy disc format as the Intel 8271 found in the BBC Micro, it was also possible to run a DFS filing system with an alternate ROM, such as the P. R. E. S AP4 interface.

In IBM PC compatible computers, the Basic Input / Output System ( BIOS ), also known as the system BIOS or ROM BIOS (), is a de facto standard defining a firmware interface.

BIOS software is stored on a non-volatile ROM chip on the motherboard.

In principle, a BIOS in ROM is customized to the particular manufacturer's hardware, allowing low-level services ( such as reading a keystroke or writing a sector of data to diskette ) to be provided in a standardized way to an operating system.

If a DFS ROM is installed, will cause the computer to search for and load a file called on the floppy disk in drive 0.

Even when the majority of the control store is stored in ROM of some sort, computer vendors often sell writeable control store as an option, allowing the customers to customize the machine's microprogram.

When using the 1581 together with the older C64, however, it is almost as slow as the older 1541 drive, due to limitations of the C64's ROM code.

When the only allowed program memory is ROM, the device is known as a microcontroller.

It is possible to permanently convert a TRS-80 into a Dragon by swapping the original TRS-80 ROM and rewiring the keyboard cable.

It has many built-in functions, like a color and grayscale display controller, PC speaker sound, serial port with UART and IRDA support, UART bootstrap, real time clock, is able to directly access DRAM, Flash ROM, and mask ROM, and has built-in support for touch screens.

It is compatible with Microsoft / IBM BASICA, but was disk based and did not need the ROM BASIC.

Modern microcode is normally written by an engineer during the processor design phase and stored in a ROM ( read-only memory ) or PLA ( programmable logic array ) structure,

Program memory in the form of NOR flash or OTP ROM is also often included on chip, as well as a typically small amount of RAM.

Other versions may be available where the ROM is accessed as an external device rather than as internal memory, however these are becoming increasingly rare due to the widespread availability of cheap microcontroller programmers.

" Pauley's hacking expertise is needed by Armitage, and the ROM construct is stored in the corporate headquarters of media conglomerate Sense / Net.

The poison in Case's bloodstream is washed out, and he and Molly are handsomely paid for their efforts, while Pauley's ROM construct is apparently erased at his own request.

* Toshiba TMP87C800F-8 Bit Microcontroller ( 8K ROM, 16K RAM )-8 MHz Operation, can access 64K ( TLCS-870 series which is based heavily on the Z80 )

The RTE client does not have a general purpose operating system-it usually lacks shells ( terminal windows ), is not designed to be patched ( updated online ), has minimal connectivity to external resources, and is often found in read-only media ( e. g. tamper-resistant ROM chips, CD-ROM, etc .).

The machine's Sinclair BASIC interpreter is stored in ROM ( along with fundamental system-routines ) and was written by Steve Vickers on contract from Nine Tiles Ltd.

* Standard industry practice in RAM and ROM manufacture has been to use the Mb abbreviation in reference to the binary interpretation of the megabit.

The " Lombard " appeared in 1999, ( AKA: Bronze Keyboard ) a thinner, lighter, and faster ( 333 or 400 MHz ) PowerBook with a longer battery life and had both USB and SCSI built in and was a New World ROM Mac, and then the " Pismo " in 2000, which replaced the single SCSI port with two FireWire ports, updated the PowerBook line to AGP graphics, a 100 MHz bus speed, and DVD-ROM optical drives standard, in addition to dropping the " G3 " from the PowerBook name.

Early prototypes had 4 KB ROM, and the ' 100 ' in the machine's name was based on the total KB amount of memory.

The new firmware also had an autostart feature which would automatically find a disk controller and boot from it when the system was powered up — earning it the name Autostart ROM.

The " Plus / 4 " name refers to the four-application ROM resident office suite ( word processor, spreadsheet, database, and graphing ); it was billed as " the productivity computer with software built-in ".

The latter might vary by region ( e. g. " Nero 7 Ultra Edition Enhanced " in the United States, " Nero 7 Premium Reloaded " in the United Kingdom and Australia ), although the name of core program remains Nero Burning ROM.

The obverse contains an classical ( not medieval ) bust of the emperor wearing a laureate wreath with the legend CESAR AVG IMP ROM ( Caesar Augustus, Emperor of the Romans ); the reverse shows an eagle, the imperial symbol, with the name FRIDE RICVS ( Frederick ).

PaperClip was also the name given to the text editor ROM portion of the Commodore PET Execudesk office suite.

** 12 8 × 8 single-color characters ; must be one of the 64 shapes built into the ROM BIOS ; can be freely positioned like sprites, but cannot overlap each other ; each character's color may be set independently

Waveform ROM in some digital sample-based music synthesizers made by Yamaha Corporation may be compressed using the LPC algorithm.

Some simpler embedded systems do not require a noticeable boot sequence to begin functioning and may simply run operational programs stored in read-only memory ( ROM ) when turned on.

The computer must execute a relatively small program stored in ROM, along with the bare minimum of data needed to access the nonvolatile devices from which the operating system programs and data may be loaded into RAM.

* Some modern CPUs and microcontrollers ( for example, TI OMAP ) or sometimes even DSPs may have boot ROM with boot code integrated directly into their silicon, so such a processor could perform quite a sophisticated boot sequence on its own and load boot programs from various sources like NAND flash, SD or MMC card and so on.

This may require physically changing ROM integrated circuits, or reprogramming flash memory with a special procedure.

Firmware such as the ROM BIOS of a personal computer may contain only elementary basic functions of a device and may only provide services to higher-level software.

However, NOR flash memory may emulate ROM primarily at the machine code level ; many digital designs need ROM ( or PLA ) structures for other uses, often at significantly higher speeds than ( economical ) flash memory may achieve.

In the case of a cache miss, however, the data is retrieved from the main memory, which is not formally divided into separate instruction and data sections, although it may well have separate memory controllers used for concurrent access to RAM, ROM and ( NOR ) flash memory.

The ROM address space is 512 words ( 12 bits each ), which may be extended to 2048 words by banking.

Coal reserves are usually stated as either ( 1 ) " Resources " (" measured " + " indicated " + " inferred " = " resources ", and then, a smaller number, often only 10-20 % of " resources ," ( 2 ) " Run of Mine " ( ROM ) reserves, and finally ( 3 ) " marketable reserves ", which may be only 60 % of ROM reserves.

Devices are often configured without disk storage, and may be configured as a " closed " system that does not allow for end-user extension ( for instance, it can be burned into ROM ).

Upon starting the console, the player may enter a series of characters referred to as a " code " or several such series that reference addresses in the ROM of the cartridge.

While over time many original copies of older games may deteriorate, be broken or thrown away, a copy in ROM or Image form may be distributed throughout the world, allowing games which would otherwise have been lost a greater chance of survival.

ROM images may be directly licensed by the rights holder.

The ROM images were cleared only for non-commercial use and may be downloaded from the MAME website after the user acknowledges the terms of usage.

The MESS emulator does not include any programming code stored in ROM chips from the emulated computer, since this may be copyrighted software.