BSAVE and BLOAD are commands in many varieties of the BASIC programming language. BSAVE copies RAM to a binary file, and BLOAD copies the contents of the file to RAM.[1] The term "BSAVE image" could mean any of various raw image formats of video display controllers, or more generally any file containing the raw contents of a section of memory.
Some platforms provided a BRUN command that, after loading the file into memory, would immediately attempt to execute it as machine code.
There is no file compression, and therefore these files load very quickly and without much programming when displayed in native mode.
BSAVE files were in general use as a file format when the IBM PC was introduced. It was also in general use on the Apple II in the same time period. Although the commands were available on the Commodore PET line, they were removed from the later (and more popular) Commodore 64 and VIC-20 computers. In 1985 the Commodore 128 was released with Commodore BASIC version 6.9 which restored the BSAVE and BLOAD commands.
Some versions of BASIC for home computers in the late 1970s and early 1980s include the command BSAVE (for "Binary Save") and the complementary BLOAD ("Binary Load"). Using the BSAVE command, a block of memory at a given address with a specified length can be written to disk as a file.[1] This file can then be reloaded into memory via BLOAD.[2]
Microsoft produced the BASIC interpreters that were bundled with the Apple II (1977), Commodore PET (1977), and IBM PC (1981) which included BSAVE and BLOAD.
A BSAVE command is also part of ASCII's MSX-DOS2 Tools for MSX-DOS version 2.[3]
ColorBASIC
On the Color Computer's ColorBASIC, those were named SAVEM and LOADM instead, with the M referring to machine code, showing that the primary intent was to load programs rather than data; the use of the B prefix to refer to binary indicates a broader view of the possible uses of the command. ColorBASIC uses a different format than GWBASIC. LOADM supports multipart content to be loaded in different places in RAM, which some programs do use, even though SAVEM supports only saving one part. The cassette equivalents were called CLOADM and CSAVEM. In ColorBASIC, the BRUN command is called EXEC instead.
The BSAVED format is a device-dependent raster image format; the file header sometimes stores information about the display hardware address, and the size of the graphics data. The graphics data follows the header directly and is stored as raw data in the format of the native adapter's addressable memory. No additional information, such as screen resolution, color depth and palette information, bit planes and so on, is stored.
^MSX-DOS2 Tools User's Manual by ASCII Corporation
Microsoft BASIC Manual BSAVE Command
Microsoft BASIC Manual BLOAD Command
Apple II DOS & Commands FAQ
AppleSoft FAQ
Commodore 128 Personal Computer System Guide Commodore Business Machines, Ltd. 1985
Pictor PC Paint File Format Summary
External links
Wikibooks has a book on the topic of: QBasic
The Commodore 128: The Most Versatile 8-Bit Computer Ever Made
December 28, 2022
bsave, this, article, multiple, issues, please, help, improve, discuss, these, issues, talk, page, learn, when, remove, these, template, messages, this, article, includes, list, general, references, lacks, sufficient, corresponding, inline, citations, please, . This article has multiple issues Please help improve it or discuss these issues on the talk page Learn how and when to remove these template messages This article includes a list of general references but it lacks sufficient corresponding inline citations Please help to improve this article by introducing more precise citations February 2019 Learn how and when to remove this template message This date is written like a personal reflection personal essay or argumentative essay that states a Wikipedia editor s personal feelings or presents an original argument about a topic Please help improve it by rewriting it in an encyclopedic style October 2020 Learn how and when to remove this template message Learn how and when to remove this template message BSAVE and BLOAD are commands in many varieties of the BASIC programming language BSAVE copies RAM to a binary file and BLOAD copies the contents of the file to RAM 1 The term BSAVE image could mean any of various raw image formats of video display controllers or more generally any file containing the raw contents of a section of memory Some platforms provided a BRUN command that after loading the file into memory would immediately attempt to execute it as machine code There is no file compression and therefore these files load very quickly and without much programming when displayed in native mode BSAVE files were in general use as a file format when the IBM PC was introduced It was also in general use on the Apple II in the same time period Although the commands were available on the Commodore PET line they were removed from the later and more popular Commodore 64 and VIC 20 computers In 1985 the Commodore 128 was released with Commodore BASIC version 6 9 which restored the BSAVE and BLOAD commands Contents 1 Origin 2 ColorBASIC 3 Video images 4 See also 5 References 6 External linksOrigin EditSome versions of BASIC for home computers in the late 1970s and early 1980s include the command BSAVE for Binary Save and the complementary BLOAD Binary Load Using the BSAVE command a block of memory at a given address with a specified length can be written to disk as a file 1 This file can then be reloaded into memory via BLOAD 2 Microsoft produced the BASIC interpreters that were bundled with the Apple II 1977 Commodore PET 1977 and IBM PC 1981 which included BSAVE and BLOAD A BSAVE command is also part of ASCII s MSX DOS2 Tools for MSX DOS version 2 3 ColorBASIC EditOn the Color Computer s ColorBASIC those were named SAVEM and LOADM instead with the M referring to machine code showing that the primary intent was to load programs rather than data the use of the B prefix to refer to binary indicates a broader view of the possible uses of the command ColorBASIC uses a different format than GWBASIC LOADM supports multipart content to be loaded in different places in RAM which some programs do use even though SAVEM supports only saving one part The cassette equivalents were called CLOADM and CSAVEM In ColorBASIC the BRUN command is called EXEC instead Video images Edit Figure 1 4 color IBM PC CGA image The BSAVED format is a device dependent raster image format the file header sometimes stores information about the display hardware address and the size of the graphics data The graphics data follows the header directly and is stored as raw data in the format of the native adapter s addressable memory No additional information such as screen resolution color depth and palette information bit planes and so on is stored See also EditApplesoft BASIC QuickBASIC GW BASICReferences Edit a b Microsoft QuickBasic 4 5 Advisor BSAVE Microsoft 1990 Retrieved 2007 07 17 Microsoft QuickBasic 4 5 Advisor BLOAD Microsoft 1990 Retrieved 2007 07 17 MSX DOS2 Tools User s Manual by ASCII Corporation Microsoft BASIC Manual BSAVE Command Microsoft BASIC Manual BLOAD Command Apple II DOS amp Commands FAQ AppleSoft FAQ Commodore 128 Personal Computer System Guide Commodore Business Machines Ltd 1985 C64 Image Formats Part 1 Pictor PC Paint File Format SummaryExternal links Edit Wikibooks has a book on the topic of QBasic How to Save Color Registers After BSAVE of PICEM Graphics Complete Instructions to BLOAD and BSAVE EGA and VGA Screens How to BLOAD BSAVE Multiple Screen Pages for EGA Screens 7 10 The Commodore 128 The Most Versatile 8 Bit Computer Ever Made Retrieved from https en wikipedia org w index php title BSAVE amp oldid 1035098374, wikipedia, wiki, book, books, library,
