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This commit is contained in:
Jeff Parsons 2016-03-09 14:22:26 -08:00
commit 0735ea8186
9 changed files with 61 additions and 45 deletions
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16
modules/pcjs/lib/ram.js
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@ -181,7 +181,7 @@ RAM.prototype.reset = function()
/*
* Memory with an ID of "ramCPQ" is reserved for built-in memory located just below the 16Mb
* boundary on Compaq DeskPro 386 machines.
* boundary on COMPAQ DeskPro 386 machines.
*
* Technically, that memory is part of the first 1Mb of memory that also provides up to 640Kb
* of conventional memory (ie, memory below 1Mb).
@ -193,7 +193,7 @@ RAM.prototype.reset = function()
*
* Therefore, a DeskPro 386's first 1Mb of physical memory is allocated by PCjs in two pieces,
* and the second piece must have an ID of "ramCPQ", triggering the additional allocation of
* Compaq-specific memory-mapped registers.
* COMPAQ-specific memory-mapped registers.
*
* See CompaqController for more details.
*/
@ -216,7 +216,7 @@ RAM.prototype.reset = function()
}
/*
* Don't add the "ramCPQ" memory to the CMOS total, because addCMOSMemory() will add it to the extended
* memory total, which will just confuse the Compaq BIOS.
* memory total, which will just confuse the COMPAQ BIOS.
*/
if (!COMPAQ386 || this.idComponent != "ramCPQ") {
if (this.chipset) this.chipset.addCMOSMemory(this.addrRAM, this.sizeRAM);
@ -302,8 +302,8 @@ RAM.init = function()
* memory slots spanning 0x000E0000-0x000FFFFF, and then update those slots with the blocks from
* 0x00FE0000-0x00FFFFFF. Note that only the top 128Kb of "ramCPQ" addressability is affected; the
* rest of that memory, ranging anywhere from 256Kb to 640Kb, remains addressable at its original
* location. Compaq's CEMM and VDISK utilities were generally the only software able to access that
* remaining memory (what Compaq refers to as "Compaq Built-in Memory").
* location. COMPAQ's CEMM and VDISK utilities were generally the only software able to access that
* remaining memory (what COMPAQ refers to as "Compaq Built-in Memory").
*
* @constructor
* @param {RAM} ram
@ -328,7 +328,7 @@ CompaqController.MAP_SIZE = 0x00020000;
/*
* Bit definitions for the 16-bit write-only memory-mapping register (wMappings)
*
* NOTE: Although Compaq says the memory at %FE0000 is "relocated", it actually remains addressable
* NOTE: Although COMPAQ says the memory at %FE0000 is "relocated", it actually remains addressable
* at %FE0000; it simply becomes addressable at %0E0000 as well, displacing any ROMs that used to be
* addressable at %0E0000 through %0FFFFF.
*/
@ -344,7 +344,7 @@ CompaqController.MAPPINGS = {
*
* SW1-7 and SW1-8 are mapped to bits 5 and 4 of wSettings, respectively, as follows:
*
* SW1-7 SW1-8 Bit5 Bit4 Amount (of base memory provided by the Compaq 32-bit memory board)
* SW1-7 SW1-8 Bit5 Bit4 Amount (of base memory provided by the COMPAQ 32-bit memory board)
* ----- ----- ---- ---- ------
* ON ON 0 0 640Kb
* ON OFF 0 1 Invalid
@ -358,7 +358,7 @@ CompaqController.MAPPINGS = {
* SW1-3: ON sets memory from 0xC00000 to 0xFFFFFF (between 12 and 16 megabytes) non-cacheable
* SW1-4: ON selects AUTO system speed (OFF selects HIGH system speed)
* SW1-5: RESERVED (however, the system can read its state; see below)
* SW1-6: Compaq Dual-Mode Monitor or Color Monitor (OFF selects Monochrome monitor other than Compaq)
* SW1-6: COMPAQ Dual-Mode Monitor or Color Monitor (OFF selects Monochrome monitor other than COMPAQ)
*
* While SW1-7 and SW1-8 are connected to this memory-mapped register, other SW1 DIP switches are accessible
* through the 8042 Keyboard Controller's KBC.INPORT register, as follows: