Tandy 5000MC (250-6000)
5kmcref1-02-03.img
Tandy 5000 MC Ref Disk ver 1.02.03 also HERE
dd'd under Linux
Alan Hightower will be receiving the complete 5000MC
Technical Reference that I've had on a shelf for more
than ten years... Microchannel never forgets...
17 July 2017: When the 5000MC comes out of the
shadows, I'll link to his page.
mcmfm.exe
- 22.3 kb - 09-17-93 - This file contains a microchannel
MFM disk driver written for the IBM Model 80, Tandy
5000, and other microchannel machines using an MFM
controller. The driver is for NetWare v3.0.
Information Files:
2410 Beep Codes
1727 Math Coprocessor
1723 Memory Upgrades
(includes jumper settings)
1728 Parallel Port
1725 Pinouts
1722 Settings
1724 Setup
1721 Specifications
1726 Video Modes
22041 Detailed Parts List
22042 Detailed Parts List
22043 Detailed Parts List
Planar
Power Plug
Pinout
CPU Card
Memory Card
Exploded View
Main
Logic P/N 8899061
E1 CMOS
Clear
E3,4
(do not use)
E5,6,7,8
(do not use)
E7,5
E11,9
E14,16
F1 1A
(Canadian version only)
J1 Keyboard
J2 LED
J3 Mouse
J4 Parallel
J5 Video
J6 Floppy
J7 Power
J8,9 Memory
Card 1
J10 Speaker
J11,12
Memory Card 2
J13,15 16
bit MCA slot
J14 16 bit MCA slot
with AVE
J16,17 32
bit MCA slot
J18 CPU slot
J19 Serial
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S1
Memory Card Definition Switch HERE
S2 Memory Definition HERE
S3 Reset
U2 8742
Keyboard Controller
U11 DS1220Y
200nS (Non Vol RAM)
U19 DS1287A
RTC (Non Vol RAM)
U31 NS16550A
UART
U34 82306
LCS (Local Channel Support)
U41,44 8259A
Interrupt Controller 1 and 2
U47 INMOS
IMSG176 CLUT
U64 82072
FDC Supported
drives
U67 82706
VGA Video Modes
U85 82309
ABC Address Bus Controller
U95 128k x 8
EPROM 27C100K-15
U104 82307
DMA and CACP Controller
U111 82308
BCS Bus Control System (MCA)
Vidram 64k x
4 120nS
Y1 1.8432MHz
osc UART
Y2 25.175MHz
osc Video
Y3 28.322MHz
osc Video
Y4 24MHz osc
FDC
Y5
14.31818MHz osc Base clock
|
As of 19 Jan 06, I have
to clear up the memory jumpers. They can be placed
across two headers, not just one. So any pair of jumpers
on this outline can have more than four combinations...
My brain hurts...
J7
Power Pinout
1,2,4,5
+5V
3 +12V
6,7,8,9 Gnd |
10 -5V
11 -12V
12 Pwrgood |
Floppy Controller
Supports 360K, 1.2M, 720K and 1.44MB
drives. Transfer rates are 250K or 500K, so it cannot
support 2.88MB. Don't try it.
Parallel
Port
Parallel port follows IBM conventions, IRQ7 only and
swapped LPT1 and LPT2. It can be set up as Compatible
(ouptut only) or Extended mode (bidirectional).
LPT Data
Status Control
1 03BCh
03BDh 03BEh
2 0378h
0379h 037Ah
3 0278h
0279h 027Ah
S1
Memory Card Definition Switch (also P103)
Now to figure out which switch is
what... Looks as if these bits have some sort of
logical operation performed on them, there is no
direct correlation between bits 3-2 and 1-0 that is
apparent.
I did find S1, but it is not labled, and it
feeds some logic chips.
Bit 7 - 2MB/8MB Card installed. 0 = 8MB card
Bit 4-6 - Reserved = 1
Bits 3-2 Memory Card in second connector
Bit 3 Bit2
0
0 Invalid
1
0 Memory card in second
connector
1
1 No card in connector 2
Bits 1-0 Memory Card in first connector
Bit 1 Bit0
0
0 Invalid
1
0 Memory card in first
connector
1
1 Invalid (of course, mem1 is
always used!)
S2 Memory Definition Switch
Not seen a real name, so I guessed.
Pin
Name
Description
1 2/4
Banks One card ON, Two
cards OFF
2 LIM
Enable Lotus-Intel-Microsoft
extended memory LEAVE OFF
3 Non-Page Mode OFF
use paged memory ON disable paged memory
4 Fast
Mode What? LEAVE ON
5
N/C
What? LEAVE OFF
6 N/C
7 N/C
8
256K/1MB 256K
simms ON, 1MB simms OFF
My guesses for valid configurations. It
looks that the memory controller cannot handle mixed
simms, unlike our beloved PS/2s. As the memory is
interleaved, all eight sockets on each card need to be
filled.
2MB 4MB
8MB 16MB
Card1 256k 256k
1MB 1MB
Card2 No
256k No 1MB
Banks
2
4
2 4
CPU
Board Rev A. P/N
8709839
U2
80387DX-20 Math Co-pro
U12
80386DX-20 CPU
U13 82385-20
Cache Controller |
U3 thru 48 4k x 4 25nS SRAM
Y1 40MHz osc
0 |
L2 cache is organized as two banks (A and B) of 4k
double words.
Cache hits, DRAM or bank, returned with 0 wait states.
Cache miss with page hit is returned with 2 wait states.
Cache miss with page miss is returned with 4 wait
states.
Memory
PCB Rev B P/N
8899065 25-6030
256K SIMMS
256K X 9 SIMM chips at 80 or 100nS
1MB SIMMS
1 MB x 9 SIMM chips at 60, 80 or
100nS
Jumper and switch settings
Battery Replacement:
MX-1560: (U11) CMS Battery Clock
Chip
MX-1561: (U19) DS1287A REAL TIME
Exploded
View
For a higher detail version, click HERE
9595 Main
Page
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