Printed 11/8/91

TC70 Memory Map

System Definitions for the Frank Hogg Laboratory, Inc.,
Tomcat TC70 68070 System
$000000	$100000 On board Video Memory U Meg)
$100000	$17FFFF On board Non-Video Memory (512K)
                $1FFC01	4 Pos. Switch (Hi 4 bits - SW1 is bit 4)
                $1FFC41	SCSI Interface (5380 or DP8490)
                $1FFC81	SCSI DAC (Data Ack.)
                $1FFCC1	Serial AT Keyboard interFaced via 2661.
                $1FFD01	A side of PIA (/P printer port)
                $1FFDO5	B side of PIA (RTC58321 clock/calendar)
                $1FFD41	Floppy Controller 37c65
                $1FFD81	A/D & D/A - Write For D/A - Read For A/D
                $1FFDC1	Uart 2661 (/T1) Full controls/mouse power

$200000 -- $3FFFFF Pixel Accelerator 2 Meg (Only uses 1 meg)
$400000 -- $EFFFFF Off board K-Bus Memory (11 Megabytes)
$F00000 -- $FAFFFF K-Bus I/0
$FB0000 -- $FBFFFF Special RAM (Battery backed K-Bus)
$FC0000 -- $FFFFFF K-Bus ROM

67070 On chip addresses (Valid in sup. state only)

$80001001 Latched Interrupt Priority Lavml Pegint,
$80002001 -- $80002009 12C port
$80002011 68070 On-chip UART used as /Term
$80002020 68070 Timer Base Address
$80002045 Peripheral interrupt Control for 12C and Timer
$80002047 Peripheral Interrupt Control for UART Rx	and Tx
$80004000 DMA Controller Base Address
$80008000 -- $8000807F MMU (Not used by OSK ... yet)

TC70 is set for 20 ms tick

Comments:

RAM: The TE70 has 1.5 Meg on board RAM. It is possible to install an additional 11 megabytes off board plus an additional 64K of battery backed SRAM for a total of over 12.5 Megabytes RAM!

SWITCH: The TC70 has a 4 position switch that in read by the ROM on startup. It can be read by the user and the ROM modified for other purposes if needed.,

Other interesting K-Bus card addresses

K-System 2/4 port boards are additional serial ports

              (K-ACI                             K-ACI4)
            	2 Fort                               4 Port
	
T2 $F00001	T3 $F00011	T4 $F00101	T5 $F00111.
T6 $F00201	T7 $F00211	T8 $F00301	T9 $F00311
TIO $F00401 T11 $F00411 T12 $F00501 T13 $F00511 Etc.

Misc. addresses. These cards are NOT needed by the TC70 and are included here for information purposes. You can use the floppy and SCSI cards with the TC70 even though both SCSI and floppv controllers are provided an the TC70.

$F01001	Floppy	(K-FDC)
$F02001	SCSI	(K-SCSI)
$F03000	DMA Base address	(K-DMA)
$FA0001	Timer A side PIA	(K-TIMER)
$FA0005	B side PIA RTC 58321
$FA0011	6840 Timer

FHL
