Apple IIGS “PVT/Prototype”

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I obtained this interesting and rare prototype or “Preproduction Validation Testing” (aka: Vegas PVT) Apple IIGS lately. It didn’t come with prototype memory card “Vegas” or “Zeus – RAM CARD” marked Expansion Memory card. The power supply looked regular GS powers upply just without the apple sticker on top. Astec AA13591, Model 699-0127, 230V 50/60HZ with date 8627, Revision 01. 

 


What is : “Apple IIGS Vegas PVT” ?

PVT stands either “Prototype Version Test” or “Production Validation Testing” simply meaning revision ment for testing and product/software developemtn before actual production started.

Vegas was development name for Apple IIGS – but also various other codenames while the new system was being developed including: “Phoenix”, “Rambo”, “Gumby”, and “Cortland”.” 

Few different board types were used during the “Cortland” project :
1985 Cortland board was blue, no SKA321-03 marking close to memory chips on right side.
1986 Cortland board was green, with SKA321-03 marked close to memory chips on right side.

The case and serial number:

case_front_s

The case seems to be early, regular IIGS production model.

 

case_back_s

The back seems to be standard as well.

 

case_bottom_s

The bottom.

 

serial-gs-pvt-ireland_s

Model : A2S6000W  (Wonder what the “W” stands for?)
Serial number: C63800JA2F6000 (Wonder what the “F” stands for?)

If i figured this out correctly then it would mean :
C 6 38 00J A2F6000
CORK
1986
WEEK 38
J = 18
0018 (unit no)

 

serial-gs-ireland-rom01_s

Compared to regular Ireland made GS, serial : CK9120PLA2S6000 (Year 1989, Week 12, Unit 802, ROM01) does not have “sticker” but it’s pressed to plastic directly – serial number part itself, is a small sticker. The ones made in 1987 have the same type of layout as well.

The main logic board:

 board_s

SKA321-03 board layout.

board_left_bottom_s

Left corner:

 

ska321-03_s

Close up: the motherboard pcb is green with “SKA321-03” printed in yellow below the are where the FAST RAM chips are. 

 

gs_1987_s

Close up: while the normal production revision the same position reads “Apple //GS”. 

The VGC is soldered into the main board, not socketed – just like early ROM0 boards.

Date on board : P8615 (next to SKA321-03)
P8615 is : 15/1986 (week/year) 7-14. April 1986
Close to barcone : 351 (very faint)
Close to barconde : 8618 (left side)
Code on board : 6xx-xxxx-A (top right next to slot 7)

 

Chip dates and codes:

CPU : C65SC8160-4 / G8549 
RAM : 8531 (all)
Audio – Ensoniq ES5503 : 343-0051-A / 8701  
Sound GLU : 344S0052-1 / 8605
MEGA II : 344S-0047
VGC : 343S-0046-1 / 8611 
KBD GLU : 344-S-0048
FPI : 344S0050-1 / 8641
ROM code & version : 342-0077-B / 8727 (ROM01)

Codes for early ROM are:
341-0077-A = ROM BF (=addon extension-board with 4 x 27C256 EPROM)
342-0077-A = ROM 00 (September 1986 – August 1987)
342-0077-B = ROM 01 (September 1987 – July 1989)

I’ve reason to believe when this unit was produced it came with the ROM BF. The case was obiously swapped later on – as it most likely originally came in //e case.

 

Serial number decoder:
https://debug.ninja/tools/apple2_serial/

Apple IIGS serial numbers list : https://docs.google.com/spreadsheets/d/1UB9TyF1h3mDyUXQgGm3Z7gxENAGOTFwL1fwLySoBRyU/edit#gid=1

 

FinApple 2020 (c)
Apple II Forever.