7854: Difference between revisions

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7854 (view source)

Revision as of 08:09, 6 April 2021

2,874 bytes added ,  6 April 2021
Added suggestion of the addess maps
(Added suggestion of the addess maps)
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Tek_7854_rise_time.jpg | Mainframe rise time measured with [[067-0587-02]]
Tek_7854_rise_time.jpg | Mainframe rise time measured with [[067-0587-02]]
</gallery>
</gallery>
==Memory Maps==
===Devices with separated ROM and RAM boards (SN < B100000)===
{| class="wikitable"
|-
! Address Range
! Size
! ICs
! colspan="3"|Purpose
|-
! 0000...3FFE
! 8k
! U100+U110
! colspan="3"|ROM
|-
! 4000...7FFE
! 8k
! U200+U210
! colspan="3"|ROM
|-
! 8000...8FFE
! 2k
! U300+U310
! colspan="3"|PATCH ROM “for future use”
|-
! 9000...9FFE
! 2k
! U400+U410
! colspan="3"|PATCH + ROM
|-
!
!
!
! 2k RAM
! 4k RAM
! 8k RAM
|-
! A000...A7FE
! 1k
! U510+U520+U530+U540
! x
! x
! x
|-
! A800...AFFE
! 1k
! U610+U620+U630+U640
!
! x
! x
|-
! B000...B7FE
! 1k
! U710+U720+U730+U740
!
!
! x
|-
! B800...BFFE
! 1k
! U810+U820+U830+U840
!
!
! x
|-
! C000...C7FE
! 1k
! U110+U120+U130+U140
!
!
! x
|-
! C800...CFFE
! 1k
! U210+U220+U230+U240
!
!
! x
|-
! D000...D7FE
! 1k
! U310+U320+U330+U340
!
! x
! x
|-
! D800...DFFE
! 1k
! U410+U420+U430+U440
! x
! x
! x
|-
! E000...E37E
!
!
! colspan="3"|GPIB, Keyboards, Digitizer,...
|-
! E380...FFFE
!
!
! colspan="3"|Reserved for Diagnostic Interface
|}
===Devices with combined RAM+ROM Board (SN >= B100000)===
{| class="wikitable"
|-
! Address Range
! Size
! ICs
! Purpose
|-
! 0000...7FFE
! 16k
! U220+U320
! ROM
|-
! 8000...9FFE
! 4k
! U200+U300
! ROM for future use
|-
! A000...DFFE
! 8k
! U400+U410
! RAM
|-
! E000...E37E
! 4k
!
! GPIB, Keyboards, Digitizer,...
|-
! E380...FFFE
!
!
! Reserved for Diagnostio Interface
|}
===Devices with installed Diagnostic Boards (all serial numbers)===
{| class="wikitable"
|-
! Address Range
! Size
! ICs
! Purpose
|-
! 0000...0FFE
! 2k
! U430+U330
! ROM
|-
! 1000...1FFE
! 2k
! U410+U310
! ROM
|-
! 2000...2FFE
! 2k
! U200+U100
! ROM
|-
! 3000...3FFE
! 2k
! U220+U120
! ROM
|-
! 4000...4FFE
! 2k
! U420+U320
! ROM
|-
! 5000...5FFE
! 2k
! U400+U300
! ROM
|-
! 6000...6FFE
! 2K
! U210+U110
! ROM
|-
! 7000...7FFE
! 2K
!
! ROM for future use
|-
! 8000...7FFE
! 4k
!
! Not used
|-
! 9800...9FFE
!
!
! RAM in Microlab I, disabled when standard ROM is in 7854
|-
! A000...DFFE
! 2...8k
!
! RAM – see tables above
|-
! E000...E37E
!
!
! GPIB, Keyboards, Digitizer,...
|-
! E380...E39E
!
!
! BKREGCS Breakpoint address register chip select
|-
! E3A0...E3BE
!
!
! CTREGCS control register chip select
|-
! E3C0...E3DE
!
!
! BKDATA breakpoint data latch
|-
! E3E0
!
!
! F/P Display Data
|-
! E3E2
!
!
! F/P Display Data
|-
! E3E4
!
!
! F/P Keyboard Data
|-
! E3E6
!
!
! F/P Keyboard flag reset
|-
! E3E8
!
!
! Terminal I/O Control
|-
! E3EA
!
!
! Terminal I/O Data
|-
! E3EC
!
!
! Cassette I/O Control
|-
! E3EE
!
!
! Cassette I/O Data
|-
! E3F0
!
!
! Modem I/O Control
|-
! E3F2
!
!
! Modem I/O Data
|-
! E3F4...E3FE
!
!
! ONBDIO on board input/output to microlab I
|-
! E400...E7FE
!
!
! RAM in Microlab I
|-
! E800...EFFE
!
! U120+U225
! ROM - bank switched by PROMBK
|-
! F000...FFFE
!
! U220+U320
! ROM - bank switched by PROMBK
|}


[[Category:7000 series non-storage mainframes]]
[[Category:7000 series non-storage mainframes]]
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Retrieved from "https://w140.com/tekwiki/wiki/Special:MobileDiff/60088"

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