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author | Lord-Nightmare <Lord-Nightmare@users.noreply.github.com> | 2016-02-10 16:55:55 -0500 |
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committer | Lord-Nightmare <Lord-Nightmare@users.noreply.github.com> | 2016-02-10 16:55:55 -0500 |
commit | 5edf31d247fce31dace951af8a3b0d5be54f175a (patch) | |
tree | 252b956acb53e4d4d74cb4026e26b33b4f786dd5 | |
parent | 96f78891f95c2f30ddfac71560538d666239da81 (diff) |
Updated NoteTaker documentation and history section, with cited sources. [Lord Nightmare]
-rw-r--r-- | src/mame/drivers/notetaker.cpp | 53 |
1 files changed, 33 insertions, 20 deletions
diff --git a/src/mame/drivers/notetaker.cpp b/src/mame/drivers/notetaker.cpp index 1e7bde4ff6f..e19f6983b2c 100644 --- a/src/mame/drivers/notetaker.cpp +++ b/src/mame/drivers/notetaker.cpp @@ -2,39 +2,52 @@ // copyright-holders:Jonathan Gevaryahu /* Xerox NoteTaker, 1978 * Driver by Jonathan Gevaryahu - * - * <Note that below is a really lousy write-up, this system deserves much better. - 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) + + * Notetaker Team At Xerox PARC 1976-1980: + Alan Kay - Team Lead + Bruce Horn - BIOS code and more + Ted Kaehler - SmallTalk-76 code porting[2] and more ( http://tedkaehler.weather-dimensions.com/us/ted/index.html ) + Dan Ingalls - BitBlt engine and SmallTalk kernel and more[3] + Doug Fairbairn - NoteTaker Hardware ( http://www.computerhistory.org/atchm/author/dfairbairn/ ) + <probably others I've missed> + * 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 (missing? mouse, no media) - One at Xerox Museum at PARC (with mouse and 2 floppies, no floppy images available) - * This device was the origin of Smalltalk-78 (which acted as the operating system of the NoteTaker) - * 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. + + * Prototypes only, 10 units[2] manufactured 1978-1980 + Known surviving units: + * One at CHM (missing? mouse, no media) + * One at Xerox Museum at PARC (with mouse and 2 floppies, floppies were not imaged to the best of my knowledge) + + * The NoteTaker used the BitBlt graphical operation (from SmallTalk-76) to do most graphical functions, in order to fit the SmallTalk code and programs within 256K of RAM[2]. The actual BitBlt code lives in ROM[3]. + * 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 - * 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 + * see http://xeroxalto.computerhistory.org/Indigo/BasicDisks/Smalltalk14.bfs!1_/ for more notetaker/smalltalk related files, including SmallTalk-80 files based on the notetaker smalltalk-78 + + References: + * [1] http://freudenbergs.de/bert/publications/Ingalls-2014-Smalltalk78.pdf + * [2] "Smalltalk and Object Orientation: An Introduction" By John Hunt, pages 45-46 [ISBN 978-3-540-76115-0] + * [3] http://bitsavers.trailing-edge.com/pdf/xerox/notetaker/memos/19790620_Z-IOP_1.5_ls.pdf + * [4] http://xeroxalto.computerhistory.org/Filene/Smalltalk-76/ + * MISSING DUMP for 8741? Keyboard MCU which does row-column scanning and mouse-related stuff TODO: everything below. -* Get the running machine smalltalk-78 memory dump loaded as a rom and forced into ram on startup, since no boot disks have survived +* figure out the correct memory maps for the 256kB of shared ram, and what part of ram constitutes the framebuffer +* figure out how the emulation-cpu boots and where its 4k of local ram maps to +* Get smalltalk-78 loaded as a rom and forced into ram on startup, since no boot disks have survived (or if any survived, they are not dumped) * floppy controller wd1791 - According to http://bitsavers.trailing-edge.com/pdf/xerox/notetaker/memos/19790620_Z-IOP_1.5_ls.pdf the format is 128 bytes per sector, 16 sectors per track (one sided) + According to [3] the format is 128 bytes per sector, 16 sectors per track (one sided) According to the schematics, we're missing an 82s147 DISKSEP.PROM used as a data separator -* crt5027 video controller -* i8251? serial/EIA controller +* crt5027 video controller; we're missing a PROM used to handle memory arbitration between the crtc and the rest of the system, but the equations are on the schematic +* Harris 6402 serial/EIA UART * Harris 6402 keyboard UART -* HLE for the missing MCU which reads the mouse quadratures and buttons +* HLE for the missing MCU which reads the mouse quadratures and buttons and talks serially to the Keyboard UART WIP: * pic8259 interrupt controller - this is attached as a device, but the interrupts are not hooked to it yet. - +* i/o cpu i/o area needs the memory map worked out per the schematics - partly done */ #include "cpu/i86/i86.h" |