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#Expanded memory note 9 software
The companies planned to launch the standard at the Spring 1985 COMDEX, with many expansion-card and software companies announcing their support. Slamming his fist on the table during an interview Bill Gates said of expanded memory, "It's garbage! It's a kludge! … But we're going to do it". Microsoft thought that bank switching was an inelegant and temporary, but necessary stopgap measure.
The final version of EMS, version 4.0 increased the maximum amount of expanded memory to 32 MiB and supported additional functionality. This was increased to 8 MiB with version 3.2 of the specification. The first publicly available version of EMS, version 3.0 allowed access of up to 4 MiB of expanded memory. Lotus Development, Intel, and Microsoft cooperated to develop the EMS standard (aka LIM EMS). (Tall Tree Systems later made EMS-based boards using the same JRAM brand.) The "window" between lower RAM and expanded RAM could be moved to different locations within the Expanded RAM.Ī first attempt to use a bank switching technique was made by Tall Tree Systems with their JRAM boards, but these did not catch on. Programs had to be written in a specific way to access expanded memory. Originally, a single 64 KiB (2 16 bytes) window of memory, called a page frame, was possible later this was made more flexible.
#Expanded memory note 9 free
To fit potentially much more memory than the 384 KiB of free address space would allow, a bank switching scheme was devised, where only selected parts of the additional memory would be accessible at any given time. The scarcity of software compatible with the 286 protected mode (no standard DOS applications could run in it) meant that the market was still open for another solution.
#Expanded memory note 9 Pc
The designers of the PC allocated the lower 640 KiB ( 655 360 bytes) of address space for read-write program memory (RAM), called "conventional memory", and the remaining 384 KiB of memory space was reserved for uses such as the system BIOS, video memory, and memory on expansion peripheral boards.Įven though the IBM PC AT, introduced in 1984, used the 80286 chip that could address up to 16 MiB of RAM as extended memory, it could only do so in protected mode. It inherited this limit from the 20-bit external address bus of the Intel 8086. The 8088 processor of the IBM PC and IBM PC/XT could address one megabyte (MiB, or 2 20 bytes) of memory. The use of expanded memory became common with games and business programs such as Lotus 1-2-3 in the late 1980s through the mid-1990s, but its use declined as users switched from DOS to protected-mode operating systems such as Linux, IBM OS/2, and Microsoft Windows.Ī section of the lower 1 MiB address space provides a "window" into several megabytes of Expanded Memory IBM, however, created its own expanded-memory standard called XMA. EEMS ultimately was incorporated in LIM EMS 4.0, which supported up to 32 MiB of expanded memory and provided some support for DOS multitasking as well. EEMS, an expanded-memory management standard competing with LIM EMS 3.x, was developed by AST Research, Quadram and Ashton-Tate ("AQA") it could map any area of the lower 1 MiB. The first widely implemented version was EMS 3.2, which supported up to 8 MiB of expanded memory and uses parts of the address space normally dedicated to communication with peripherals ( upper memory) to map portions of the expanded memory. The most widely used variant was the Expanded Memory Specification ( EMS), which was developed jointly by Lotus Software, Intel, and Microsoft, so that this specification was sometimes referred to as " LIM EMS". In DOS memory management, expanded memory is a system of bank switching that provided additional memory to DOS programs beyond the limit of conventional memory (640 KiB).Įxpanded memory is an umbrella term for several incompatible technology variants. OIS, dual aperture (f/1.5 or f/2.Several expanded-memory pages are bank-switched in the page frame, part of the upper memory area. It also supports Samsung Pay, Samsung's DeX dongle that turns the phone into a desktop, fast wireless charging, memory cards, and 3.5mm headphones.
#Expanded memory note 9 android
Other features of this top-end Android phone are similar to the Note8 and Galaxy S9+, including an extra telephoto camera, Quad-HD AMOLED screen, auto-focus front camera, water resistance, iris scanner, fingerprint sensor, and heart rate monitor.
#Expanded memory note 9 update
This update to the Note series has a larger battery, faster processor, Bluetooth stylus that works as a remote control, and stereo speakers.
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