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Xerox NoteTaker: Finish documenting the I/O CPU's I/O ports, update history documentation a bit more [Lord Nightmare]

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Lord-Nightmare 2016-02-11 00:15:44 -05:00
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src/mame/drivers/notetaker.cpp
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@ -8,8 +8,10 @@
Bruce Horn - BIOS code and more Bruce Horn - BIOS code and more
Ted Kaehler - SmallTalk-76 code porting[2] and more ( http://tedkaehler.weather-dimensions.com/us/ted/index.html ) 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] Dan Ingalls - BitBlt engine and SmallTalk kernel and more[3]
Doug Fairbairn - NoteTaker Hardware ( http://www.computerhistory.org/atchm/author/dfairbairn/ ) Doug Fairbairn - NoteTaker Hardware/Electronics Design ( http://www.computerhistory.org/atchm/author/dfairbairn/ )
<probably others I've missed> James Leung - NoteTaker Hardware/Electronics Design
Ron Freeman - NoteTaker Hardware/Electronics Design
<there are probably others I've missed>
* 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
@ -31,6 +33,7 @@
* [2] "Smalltalk and Object Orientation: An Introduction" By John Hunt, pages 45-46 [ISBN 978-3-540-76115-0] * [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 * [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/ * [4] http://xeroxalto.computerhistory.org/Filene/Smalltalk-76/
* [5] http://bitsavers.trailing-edge.com/pdf/xerox/notetaker/memos/19790118_NoteTaker_System_Manual.pdf
* MISSING DUMP for 8741? Keyboard MCU which does row-column scanning and mouse-related stuff * MISSING DUMP for 8741? Keyboard MCU which does row-column scanning and mouse-related stuff
TODO: everything below. TODO: everything below.
@ -38,16 +41,16 @@ TODO: everything below.
* figure out how the emulation-cpu boots and where its 4k of local ram maps to * 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) * 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 * floppy controller wd1791
According to [3] the format is 128 bytes per sector, 16 sectors per track (one sided) According to [3] and [5] the format is double density/MFM, 128 bytes per sector, 16 sectors per track, 1 or 2 sided, for 170K or 340K per disk.
According to the schematics, we're missing an 82s147 DISKSEP.PROM used as a data separator According to the schematics, we're missing an 82s147 DISKSEP.PROM used as a data separator
* 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 * 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 serial/EIA UART
* Harris 6402 keyboard UART * Harris 6402 keyboard UART
* HLE for the missing MCU which reads the mouse quadratures and buttons and talks serially to the Keyboard UART * HLE for the missing i8748[5] MCU in the keyboard which reads the mouse quadratures and buttons and talks serially to the Keyboard UART
WIP: WIP:
* pic8259 interrupt controller - this is attached as a device, but the interrupts are not hooked to it yet. * 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 * i/o cpu i/o area needs the memory map worked out per the schematics - mostly done
*/ */
#include "cpu/i86/i86.h" #include "cpu/i86/i86.h"
@ -147,28 +150,48 @@ ADDRESS_MAP_END
/* io memory map comes from http://bitsavers.informatik.uni-stuttgart.de/pdf/xerox/notetaker/memos/19790605_Definition_of_8086_Ports.pdf /* io memory map comes from http://bitsavers.informatik.uni-stuttgart.de/pdf/xerox/notetaker/memos/19790605_Definition_of_8086_Ports.pdf
and from the schematic at http://bitsavers.informatik.uni-stuttgart.de/pdf/xerox/notetaker/schematics/19790423_Notetaker_IO_Processor.pdf and from the schematic at http://bitsavers.informatik.uni-stuttgart.de/pdf/xerox/notetaker/schematics/19790423_Notetaker_IO_Processor.pdf
a19 a18 a17 a16 a15 a14 a13 a12 a11 a10 a9 a8 a7 a6 a5 a4 a3 a2 a1 a0 a19 a18 a17 a16 a15 a14 a13 a12 a11 a10 a9 a8 a7 a6 a5 a4 a3 a2 a1 a0
? ? ? ? 0 x x x x x x 0 0 0 0 x x x * . RW IntCon (PIC8259) x x x x 0 x x x x x x 0 0 0 0 x x x * . RW IntCon (PIC8259)
? ? ? ? 0 x x x x x x 0 0 0 1 x x x x . W IPConReg x x x x 0 x x x x x x 0 0 0 1 x x x x . W IPConReg
? ? ? ? 0 x x x x x x 0 0 1 0 x x x x . W KbdInt x x x x 0 x x x x x x 0 0 1 0 x 0 0 0 . . KbdInt:Open Bus
? ? ? ? 0 x x x x x x 0 0 1 1 x x x x . W FIFOReg x x x x 0 x x x x x x 0 0 1 0 x 0 0 1 . R KbdInt:ReadKeyData
? ? ? ? 0 x x x x x x 0 1 0 0 x x x x . . Open Bus x x x x 0 x x x x x x 0 0 1 0 x 0 1 0 . R KbdInt:ReadOPStatus
? ? ? ? 0 x x x x x x 0 1 0 1 x x x x . . Open Bus x x x x 0 x x x x x x 0 0 1 0 x 0 1 1 . . KbdInt:Open Bus
? ? ? ? 0 x x x x x x 0 1 1 0 x x x x . W FIFOBus x x x x 0 x x x x x x 0 0 1 0 x 1 0 0 . W KbdInt:LoadKeyCtlReg
? ? ? ? 0 x x x x x x 0 1 1 1 x x x x . . Open Bus x x x x 0 x x x x x x 0 0 1 0 x 1 0 1 . W KbdInt:LoadKeyData
0 0 0 0 0 0 0 0 * * * * * * * * * * * . R ROM, but ONLY if BootSegDone is TRUE, and /DisableROM is FALSE x x x x 0 x x x x x x 0 0 1 0 x 1 1 0 . W KbdInt:KeyDataReset
x x x x 0 x x x x x x 0 0 1 0 x 1 1 1 . W KbdInt:KeyChipReset
x x x x 0 x x x x x x 0 0 1 1 x x x x . W FIFOReg
x x x x 0 x x x x x x 0 1 0 0 x x x x . . Open Bus
x x x x 0 x x x x x x 0 1 0 1 x x x x . . Open Bus
x x x x 0 x x x x x x 0 1 1 0 x x x x . W FIFOBus
x x x x 0 x x x x x x 0 1 1 1 x x x x . . Open Bus
x x x x 0 x x x x x x 1 0 0 0 x x x x . RW SelDiskReg
x x x x 0 x x x x x x 1 0 0 1 x x * * . RW SelDiskInt
x x x x 0 x x x x x x 1 0 1 0 * * * * . W SelCrtInt
x x x x 0 x x x x x x 1 0 1 1 x x x x . W LoadDispAddr
x x x x 0 x x x x x x 1 1 0 0 x x x x . . Open Bus
x x x x 0 x x x x x x 0 1 0 1 x 0 0 0 . R SelEIA:ReadEIAStatus
x x x x 0 x x x x x x 0 1 0 1 x 0 0 1 . R SelEIA:ReadEIAData
x x x x 0 x x x x x x 0 1 0 1 x 0 1 0 . . SelEIA:Open Bus
x x x x 0 x x x x x x 0 1 0 1 x 0 1 1 . . SelEIA:Open Bus
x x x x 0 x x x x x x 0 1 0 1 x 1 0 0 . W SelEIA:LoadEIACtlReg
x x x x 0 x x x x x x 0 1 0 1 x 1 0 1 . W SelEIA:LoadEIAData
x x x x 0 x x x x x x 0 1 0 1 x 1 1 0 . W SelEIA:EIADataReset
x x x x 0 x x x x x x 0 1 0 1 x 1 1 1 . W SelEIA:EIAChipReset
x x x x 0 x x x x x x 1 1 1 0 x x x x . R SelADCHi
x x x x 0 x x x x x x 1 1 1 1 x x x x . W CRTSwitch
*/ */
static ADDRESS_MAP_START(notetaker_io, AS_IO, 16, notetaker_state) static ADDRESS_MAP_START(notetaker_io, AS_IO, 16, notetaker_state)
ADDRESS_MAP_UNMAP_HIGH ADDRESS_MAP_UNMAP_HIGH
AM_RANGE(0x00, 0x03) AM_MIRROR(0x7E1C) AM_DEVREADWRITE8("pic8259", pic8259_device, read, write, 0x00ff) AM_RANGE(0x00, 0x03) AM_MIRROR(0xF7E1C) AM_DEVREADWRITE8("pic8259", pic8259_device, read, write, 0x00ff)
AM_RANGE(0x20, 0x21) AM_MIRROR(0x7E1E) AM_WRITE(IPConReg_w) // processor (rom mapping, etc) control register AM_RANGE(0x20, 0x21) AM_MIRROR(0xF7E1E) AM_WRITE(IPConReg_w) // processor (rom mapping, etc) control register
//AM_RANGE(0x42, 0x43) AM_READ read keyboard data (high byte only) [from mcu?] //AM_RANGE(0x42, 0x43) AM_MIRROR(0xF7E10) AM_READ(ReadKeyData_r) // read keyboard data (high byte only) [from mcu?]
//AM_RANGE(0x44, 0x45) AM_READ read keyboard fifo state (high byte only) [from mcu?] //AM_RANGE(0x44, 0x45) AM_MIRROR(0xF7E10) AM_READ(ReadOPStatus_r) // read keyboard fifo state (high byte only) [from mcu?]
//AM_RANGE(0x48, 0x49) AM_WRITE kbd->uart control register [to mcu?] //AM_RANGE(0x48, 0x49) AM_MIRROR(0xF7E10) AM_WRITE(LoadKeyCtlReg_w) // kbd uart control register
//AM_RANGE(0x4a, 0x4b) AM_WRITE kbd->uart data register [to mcu?] //AM_RANGE(0x4a, 0x4b) AM_MIRROR(0xF7E10) AM_WRITE(LoadKeyData_w) // kbd uart data register
//AM_RANGE(0x4c, 0x4d) AM_WRITE kbd data reset [to mcu?] //AM_RANGE(0x4c, 0x4d) AM_MIRROR(0xF7E10) AM_WRITE(KeyDataReset_w) // kbd uart ddr switch (data reset)
//AM_RANGE(0x4e, 0x4f) AM_WRITE kbd chip [mcu?] reset [to mcu?] //AM_RANGE(0x4e, 0x4f) AM_MIRROR(0xF7E10) AM_WRITE(KeyChipReset_w) // kbd uart reset
//AM_RANGE(0x60, 0x61) AM_WRITE DAC sample and hold and frequency setup //AM_RANGE(0x60, 0x61) AM_MIRROR(0xF7E1E) AM_WRITE(FIFOReg_w) // DAC sample and hold and frequency setup
//AM_RANGE(0x100, 0x101) AM_WRITE I/O register (adc speed, crtc pixel clock enable, etc) //AM_RANGE(0x100, 0x101) AM_WRITE I/O register (adc speed, crtc pixel clock enable, etc)
//AM_RANGE(0x140, 0x15f) AM_DEVREADWRITE("crt5027", crt5027_device, read, write) //AM_RANGE(0x140, 0x15f) AM_DEVREADWRITE("crt5027", crt5027_device, read, write)
ADDRESS_MAP_END ADDRESS_MAP_END