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Update NoteTaker notes and history a bit (nw)

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Lord-Nightmare 2016-02-10 14:37:51 -05:00
parent a686075690
commit a9cfa69af9
1 changed files with 22 additions and 13 deletions
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src/mame/drivers/notetaker.cpp
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@ -1,19 +1,24 @@
// license:BSD-3-Clause // license:BSD-3-Clause
// copyright-holders:Jonathan Gevaryahu // copyright-holders:Jonathan Gevaryahu
/* Xerox Notetaker, 1978 /* Xerox NoteTaker, 1978
* Driver by Jonathan Gevaryahu * Driver by Jonathan Gevaryahu
* *
* <Note that below is a really lousy write-up, this system deserves much better. use the Ingalls-2014-Smalltalk78.pdf as a better source for all this stuff!> * <Note that below is a really lousy write-up, this system deserves much better.
* Designed by Alan Kay and Many others, with BIOS written by Bruce Horn We should use the Ingalls-2014-Smalltalk78.pdf as a better source for all this stuff!>
* Designed by Alan Kay and many others, with BIOS written by Bruce Horn (BitBlt function in BIOS written by Dan Ingalls)
* History of the machine can be found at http://freudenbergs.de/bert/publications/Ingalls-2014-Smalltalk78.pdf * History of the machine can be found at http://freudenbergs.de/bert/publications/Ingalls-2014-Smalltalk78.pdf
* prototypes only, around 10 units manufactured 1978-1980 (one at CHM, not sure where the others are) * prototypes only, around 10 units manufactured 1978-1980
* This device was the origin of Smalltalk-78 (which acted as the operating system of the Notetaker) One at CHM (missing? mouse, no media)
* The Notetaker also introduced the BitBlt graphical operation, which was used to do most graphical functions in Smalltalk-78 One at Xerox Museum at PARC (with mouse and 2 floppies, no floppy images available)
* As far as I am aware, no media (world disks/boot disks) for the Notetaker have survived, only an incomplete ram dump of the smalltalk-76 * This device was the origin of Smalltalk-78 (which acted as the operating system of the NoteTaker)
* 'world' which was used to bootstrap smalltalk-78 originally * The NoteTaker also used the BitBlt graphical operation to do most graphical functions in Smalltalk-78
* BitBlt was not invented for the NoteTaker, but for the Alto; however unlike the Alto, the NoteTaker used it for almost every graphical operation.
* As far as I am aware, no media (world disks/boot disks) for the NoteTaker have survived (except maybe the two disks at Xerox Museum at PARC), but an incomplete dump of the Smalltalk-76 'world' which was used to bootstrap Smalltalk-78 originally did survive on the Alto disks at CHM
* see http://bitsavers.informatik.uni-stuttgart.de/pdf/xerox/notetaker for additional information * see http://bitsavers.informatik.uni-stuttgart.de/pdf/xerox/notetaker for additional information
* http://bitsavers.trailing-edge.com/pdf/xerox/notetaker/memos/19790620_Z-IOP_1.5_ls.pdf is listing of the biop v1.5 code * http://bitsavers.trailing-edge.com/pdf/xerox/notetaker/memos/19790620_Z-IOP_1.5_ls.pdf is listing of the biop v1.5 code
* see http://xeroxalto.computerhistory.org/Filene/Smalltalk-76/ for the smalltalk-76 dump
* see http://xeroxalto.computerhistory.org/Indigo/BasicDisks/Smalltalk14.bfs!1_/ for more notetaker/smalltalk related files
* *
* MISSING DUMP for 8741? I/O MCU which does mouse-related stuff * MISSING DUMP for 8741? I/O MCU which does mouse-related stuff
@ -116,9 +121,13 @@ BootSeqDone is 1, DisableROM is 0, mem map is 0x00000-0x00fff reading is t
BootSeqDone is 1, DisableROM is 1, mem map is entirely RAM or open bus for both reading and writing. BootSeqDone is 1, DisableROM is 1, mem map is entirely RAM or open bus for both reading and writing.
*/ */
static ADDRESS_MAP_START(notetaker_mem, AS_PROGRAM, 16, notetaker_state) static ADDRESS_MAP_START(notetaker_mem, AS_PROGRAM, 16, notetaker_state)
/*AM_RANGE(0x00000, 0x00fff) AM_ROM AM_REGION("maincpu", 0xFF000) // I think this copy of rom is actually banked via io reg 0x20, there is RAM which lives behind here? /*
AM_RANGE(0x01000, 0x3ffff) AM_RAM // ram lives here, 256KB AM_RANGE(0x00000, 0x00fff) AM_ROM AM_REGION("maincpu", 0xFF000) // rom is here if either BootSeqDone OR DisableROM are zero. the 1.5 source code implies writes here are ignored
AM_RANGE(0xff000, 0xfffff) AM_ROM // is this banked too? Don't think so...*/ AM_RANGE(0x01000, 0x01fff) AM_RAM // 4k of ram, local to the io processor
AM_RANGE(0x02000, 0x3ffff) AM_RAM AM_BASE("sharedram") // 256k of ram (less 8k), shared between both processors
// note 4000-8fff? is the framebuffer for the screen?
AM_RANGE(0xff000, 0xfffff) AM_ROM // rom is only banked in here if bootseqdone is 0, so the reset vector is in the proper place
*/
AM_RANGE(0x00000, 0xfffff) AM_READWRITE(maincpu_r, maincpu_w) // bypass MAME's memory map system as we need finer grained control AM_RANGE(0x00000, 0xfffff) AM_READWRITE(maincpu_r, maincpu_w) // bypass MAME's memory map system as we need finer grained control
ADDRESS_MAP_END ADDRESS_MAP_END
@ -256,7 +265,7 @@ ROM_START( notetakr )
ROM_REGION( 0x100000, "ram", ROMREGION_ERASEFF ) // ram cards ROM_REGION( 0x100000, "ram", ROMREGION_ERASEFF ) // ram cards
ROM_REGION( 0x1000, "proms", ROMREGION_ERASEFF ) ROM_REGION( 0x1000, "proms", ROMREGION_ERASEFF )
ROM_LOAD( "disksep.prom.82s147.a4", 0x000, 0x200, NO_DUMP ) // disk data separator prom from the disk/display module board ROM_LOAD( "disksep.prom.82s147.a4", 0x000, 0x200, NO_DUMP ) // disk data separator prom from the disk/display module board
ROM_LOAD( "setmemrq.prom.82s126.d9", 0x200, 0x100, NO_DUMP ) // SETMEMRQ memory timing prom from the disk/display module board ROM_LOAD( "setmemrq.prom.82s126.d9", 0x200, 0x100, NO_DUMP ) // SETMEMRQ memory timing prom from the disk/display module board; The equations for this one are actually listed on the schematic, so it should be pretty easy to recreate.
ROM_END ROM_END
/* Driver */ /* Driver */