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Chapter set above: Mainboard HOT-419 (486, AT, OPTi)

<>Configuration tables for HOT-419DZ/R2

Chapter set below:
CPUs
Systemclock
CPU voltage
VL-Bus settings
Memory
Cache size

<>CPUs

Jumper

AMD 486 NV8T
DX/DX2/DX4 (3.45V)
ST 486 DX2
UMC U5S

Intel S-Series
DX/DX2/DX4
marking "&E..."
(3.3 or 5V)

Cyrix DX/DX2
Cyrix DX2V
(3.3 or 4V)

3

1-2

1-2

1-2

5

2-3

2-3

2-3

8

1-2

1-2

1-2

42

open

1-2

2-3

43

DX2: 1-2
DX4: 2-3

1-2

2-3

44

open

closed

open

45

open

closed

open

46

open

closed

open

47

open

open

closed

48

open

open

closed

49

1-2

1-2

2-3

65

.

Multiplier for DX4:
2x : closed
3x : open

.

77

1-2

2-3

1-2

Jumper

AMD 486 SV8B
DX4 (3.45V)
Intel P24D

Intel 486SX
Non S-Series

Intel 486SX
S-Series

3

1-2

open

open

5

2-3

2-3

2-3

8

1-2

1-2

1-2

42

open

open

1-2

43

1-2

1-2

1-2

44

open

open

closed

45

open

open

closed

46

open

open

closed

47

open

open

open

48

open

open

open

49

1-2

1-2

1-2

59

write back: closed
write through: open

.

.

77

1-2

.

.

<>Systemclock

Systemclock

JP22 JP21 JP23

20 MHz

25 MHz

25 MHz
(Intel DX4, only)

33 MHz

33 MHz
(Intel DX4, only)

40 MHz

50 MHz

50 MHz
(Intel DX4, only)

<>CPU voltage

CPU voltage

JP64

JP73

3V

3.3V
for Intel 3V and
Cyrix 3.3V

3.45V
für AMD 3V

5V
for all 5V CPUs

No effect

<>VL-Bus settings

VL-Bus Speed - JP34

33 MHz or more

below 33 MHz

High Speed Write- JP33

No Waitstate

1 Waitstate

CPU DRY# Signal Delay - JP55/69

Setup 1
for fast VL-bus devices

Setup 2
for slow VL-bus devices
(recommended setting)

Address hold time (ADS#) - JP36

Normal operation

Delay CPU ADS# signal

<>Memory

HOT-419 provided two memory configuration modes, mode 1 and mode 2. Jumpers JP60, JP61, JP62, JP70, JP71, and JP72 are provided to configure the memory configuration between two memory configuration modes. In Mode 1 the mainboard supports 4 banks of socalled single density modules in sizes of 1, 4, 16 or 64MB. Mode 2 supports double density modules in sizes of 2, 8, or 32MB, too - but only 3 banks: the memory socket next to the ISA expansion slot must be left empty. The mainboard supports a total size of 2 to 128MB memory.

Memory Mode 1

Memory Mode 2

Note:
When memory configuration mode 1 is selected, HOT-419 mainboard supported two VESA master local bus slot, one on J20 (VL Bus slot 1), and the other one on J19 (VL-Bus slot 2) or J18 (VL-Bus slot 3).
If memory configuration mode 2 is selected, HOT-419 mainboard only supported one VESA master local bus slot on J18 or J19, J20 is assigned to slave always.

<>Cache size

Cache
size

Data SRAM
Bank 0
U5...U8

Data SRAM
Bank 1
U9...U12

Tag RAM
U13

JP 10, JP13
JP50, JP11

64 kB

8k x 8

8k x 8

8k x 8


128 kB

32k x 8

empty

32k x 8


256 kB

32k x 8

32k x 8

32k x 8


512 kB

128k x 8

empty

32k x 8



© 1999 Shuttle Inc., Last modification: 01/13/2000
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