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The main advantage of mask ROM is its cost. Per bit, mask ROM was more compact than any other kind of semiconductor memory. Since the cost of an integrated circuit strongly depends on its size, mask ROM is significantly cheaper than any other kind of semiconductor memory.
[24] [25] [26] Synchronous dynamic random-access memory (SDRAM) later debuted with the Samsung KM48SL2000 chip in 1992. [27] [28] The term "memory" is also often used to refer to non-volatile memory, specifically flash memory. It has origins in read-only memory (ROM).
To be fully expressible, the size of widescreen display must thus be a multiple of 16×9 pixels. For 1366×768 pixel Wide XGA panels the nearest resolution expressible in the EDID standard timing descriptor syntax is 1360×765 pixels, typically leading to 3-pixel-thin black bars.
The BIOS Boot Specification requires that option ROMs be aligned to 2 kB boundaries (e.g. segments C8000h, C8800h, C9000h, C9800h, etc.). The first two bytes of the ROM must be 55 AA. [4] The third byte indicates the ROM size in 512-bytes blocks (e.g. 20h for 16kB ROM). And the fourth byte is where the BIOS begins execution of the option ROM to ...
Writable variants of ROM (such as EEPROM and NOR flash) share properties of both ROM and RAM, enabling data to persist without power and to be updated without requiring special equipment. ECC memory (which can be either SRAM or DRAM) includes special circuitry to detect and/or correct random faults (memory errors) in the stored data, using ...
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The boot ROMs of several Texas Instruments systems on a chip support configuring the peripherals through specific pins of the system on a chip. They have many ways to load the first stage bootloader (which is called MLO in the systems on a chip reference manuals): It can be loaded from various storage devices (MMC/SD/eMMC, NAND, etc.).
The manual page further limits the number of characters in the Data field to 64 (or 32 data bytes). [4] A record with an 8-hex-character address and 64 data characters would be 78 (2 + 2 + 8 + 64 + 2) characters long (this count ignores possible end-of-line or string termination characters), and fits on an 80-character wide teleprinter .
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